Home / 103,680,712.30-155,521,068.45-76,806,856.30

Finding the Fourth Proportional to 103,680,712.30, 155,521,068.45 and 76,806,856.30

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Solution

The fourth proportional to 103,680,712.30, 155,521,068.45 and 76,806,856.30 is: 115,210,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,712.30 : 155,521,068.45 = 76,806,856.30 : x
  2. Step 2: Convert to fraction form
    103,680,712.30/155,521,068.45 = 76,806,856.30/x
  3. Step 3: Cross multiply
    103,680,712.30x = 155,521,068.45 × 76,806,856.30
  4. Step 4: Simplify right side
    103,680,712.30x = 11,945,084,356,061,612
  5. Step 5: Solve for x
    x = 11,945,084,356,061,612/103,680,712.30
  6. Step 6: Final answer
    x = 115,210,284.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.