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Finding the Fourth Proportional to 110,729, 152,806.02 and 60,428

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Solution

The fourth proportional to 110,729, 152,806.02 and 60,428 is: 83,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,729 : 152,806.02 = 60,428 : x
  2. Step 2: Convert to fraction form
    110,729/152,806.02 = 60,428/x
  3. Step 3: Cross multiply
    110,729x = 152,806.02 × 60,428
  4. Step 4: Simplify right side
    110,729x = 9,233,762,176.56
  5. Step 5: Solve for x
    x = 9,233,762,176.56/110,729
  6. Step 6: Final answer
    x = 83,390.64

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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.