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Finding the Fourth Proportional to 109,722.60, 151,438.18 and 64,410.60

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Solution

The fourth proportional to 109,722.60, 151,438.18 and 64,410.60 is: 88,898.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,722.60 : 151,438.18 = 64,410.60 : x
  2. Step 2: Convert to fraction form
    109,722.60/151,438.18 = 64,410.60/x
  3. Step 3: Cross multiply
    109,722.60x = 151,438.18 × 64,410.60
  4. Step 4: Simplify right side
    109,722.60x = 9,754,224,036.71
  5. Step 5: Solve for x
    x = 9,754,224,036.71/109,722.60
  6. Step 6: Final answer
    x = 88,898.95

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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.