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Finding the Fourth Proportional to 134,709.52, 185,895.48 and 74,279.20

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Solution

The fourth proportional to 134,709.52, 185,895.48 and 74,279.20 is: 102,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,709.52 : 185,895.48 = 74,279.20 : x
  2. Step 2: Convert to fraction form
    134,709.52/185,895.48 = 74,279.20/x
  3. Step 3: Cross multiply
    134,709.52x = 185,895.48 × 74,279.20
  4. Step 4: Simplify right side
    134,709.52x = 13,808,167,538.02
  5. Step 5: Solve for x
    x = 13,808,167,538.02/134,709.52
  6. Step 6: Final answer
    x = 102,503.28

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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.