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Finding the Fourth Proportional to 109,762.59, 151,469.28 and 64,439.85

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Solution

The fourth proportional to 109,762.59, 151,469.28 and 64,439.85 is: 88,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,762.59 : 151,469.28 = 64,439.85 : x
  2. Step 2: Convert to fraction form
    109,762.59/151,469.28 = 64,439.85/x
  3. Step 3: Cross multiply
    109,762.59x = 151,469.28 × 64,439.85
  4. Step 4: Simplify right side
    109,762.59x = 9,760,657,682.81
  5. Step 5: Solve for x
    x = 9,760,657,682.81/109,762.59
  6. Step 6: Final answer
    x = 88,925.18

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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.