Home / 133,140.76-183,726.12-72,699.12

Finding the Fourth Proportional to 133,140.76, 183,726.12 and 72,699.12

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Solution

The fourth proportional to 133,140.76, 183,726.12 and 72,699.12 is: 100,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,140.76 : 183,726.12 = 72,699.12 : x
  2. Step 2: Convert to fraction form
    133,140.76/183,726.12 = 72,699.12/x
  3. Step 3: Cross multiply
    133,140.76x = 183,726.12 × 72,699.12
  4. Step 4: Simplify right side
    133,140.76x = 13,356,727,517.64
  5. Step 5: Solve for x
    x = 13,356,727,517.64/133,140.76
  6. Step 6: Final answer
    x = 100,320.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.