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Finding the Fourth Proportional to 134,369, 185,429.40 and 74,753

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Solution

The fourth proportional to 134,369, 185,429.40 and 74,753 is: 103,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,369 : 185,429.40 = 74,753 : x
  2. Step 2: Convert to fraction form
    134,369/185,429.40 = 74,753/x
  3. Step 3: Cross multiply
    134,369x = 185,429.40 × 74,753
  4. Step 4: Simplify right side
    134,369x = 13,861,403,938.20
  5. Step 5: Solve for x
    x = 13,861,403,938.20/134,369
  6. Step 6: Final answer
    x = 103,159.24

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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.