Home / 103,680,309.30-155,520,463.95-76,806,453.30

Finding the Fourth Proportional to 103,680,309.30, 155,520,463.95 and 76,806,453.30

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Solution

The fourth proportional to 103,680,309.30, 155,520,463.95 and 76,806,453.30 is: 115,209,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,309.30 : 155,520,463.95 = 76,806,453.30 : x
  2. Step 2: Convert to fraction form
    103,680,309.30/155,520,463.95 = 76,806,453.30/x
  3. Step 3: Cross multiply
    103,680,309.30x = 155,520,463.95 × 76,806,453.30
  4. Step 4: Simplify right side
    103,680,309.30x = 11,944,975,251,570,008
  5. Step 5: Solve for x
    x = 11,944,975,251,570,008/103,680,309.30
  6. Step 6: Final answer
    x = 115,209,679.95

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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.