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Finding the Fourth Proportional to 135,248.68, 186,641.52 and 74,814.64

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Solution

The fourth proportional to 135,248.68, 186,641.52 and 74,814.64 is: 103,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,248.68 : 186,641.52 = 74,814.64 : x
  2. Step 2: Convert to fraction form
    135,248.68/186,641.52 = 74,814.64/x
  3. Step 3: Cross multiply
    135,248.68x = 186,641.52 × 74,814.64
  4. Step 4: Simplify right side
    135,248.68x = 13,963,518,127.85
  5. Step 5: Solve for x
    x = 13,963,518,127.85/135,248.68
  6. Step 6: Final answer
    x = 103,243.29

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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.