Home / 103,680,443.80-155,520,665.70-76,806,587.80

Finding the Fourth Proportional to 103,680,443.80, 155,520,665.70 and 76,806,587.80

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Solution

The fourth proportional to 103,680,443.80, 155,520,665.70 and 76,806,587.80 is: 115,209,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,443.80 : 155,520,665.70 = 76,806,587.80 : x
  2. Step 2: Convert to fraction form
    103,680,443.80/155,520,665.70 = 76,806,587.80/x
  3. Step 3: Cross multiply
    103,680,443.80x = 155,520,665.70 × 76,806,587.80
  4. Step 4: Simplify right side
    103,680,443.80x = 11,945,011,664,801,498
  5. Step 5: Solve for x
    x = 11,945,011,664,801,498/103,680,443.80
  6. Step 6: Final answer
    x = 115,209,881.70

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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.