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Finding the Fourth Proportional to 134,827.28, 186,053.28 and 74,398.40

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Solution

The fourth proportional to 134,827.28, 186,053.28 and 74,398.40 is: 102,665.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,827.28 : 186,053.28 = 74,398.40 : x
  2. Step 2: Convert to fraction form
    134,827.28/186,053.28 = 74,398.40/x
  3. Step 3: Cross multiply
    134,827.28x = 186,053.28 × 74,398.40
  4. Step 4: Simplify right side
    134,827.28x = 13,842,066,346.75
  5. Step 5: Solve for x
    x = 13,842,066,346.75/134,827.28
  6. Step 6: Final answer
    x = 102,665.18

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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.