Home / 99,390.28-149,085.44-68,130.76

Finding the Fourth Proportional to 99,390.28, 149,085.44 and 68,130.76

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Solution

The fourth proportional to 99,390.28, 149,085.44 and 68,130.76 is: 102,196.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,390.28 : 149,085.44 = 68,130.76 : x
  2. Step 2: Convert to fraction form
    99,390.28/149,085.44 = 68,130.76/x
  3. Step 3: Cross multiply
    99,390.28x = 149,085.44 × 68,130.76
  4. Step 4: Simplify right side
    99,390.28x = 10,157,304,332.13
  5. Step 5: Solve for x
    x = 10,157,304,332.13/99,390.28
  6. Step 6: Final answer
    x = 102,196.15

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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.