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Finding the Fourth Proportional to 109,449.79, 151,027.83 and 61,700.29

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Solution

The fourth proportional to 109,449.79, 151,027.83 and 61,700.29 is: 85,139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,449.79 : 151,027.83 = 61,700.29 : x
  2. Step 2: Convert to fraction form
    109,449.79/151,027.83 = 61,700.29/x
  3. Step 3: Cross multiply
    109,449.79x = 151,027.83 × 61,700.29
  4. Step 4: Simplify right side
    109,449.79x = 9,318,460,909.07
  5. Step 5: Solve for x
    x = 9,318,460,909.07/109,449.79
  6. Step 6: Final answer
    x = 85,139.14

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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.