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Finding the Fourth Proportional to 109,646.16, 151,311.24 and 61,898.96

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Solution

The fourth proportional to 109,646.16, 151,311.24 and 61,898.96 is: 85,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,646.16 : 151,311.24 = 61,898.96 : x
  2. Step 2: Convert to fraction form
    109,646.16/151,311.24 = 61,898.96/x
  3. Step 3: Cross multiply
    109,646.16x = 151,311.24 × 61,898.96
  4. Step 4: Simplify right side
    109,646.16x = 9,366,008,392.31
  5. Step 5: Solve for x
    x = 9,366,008,392.31/109,646.16
  6. Step 6: Final answer
    x = 85,420.30

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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.