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Finding the Fourth Proportional to 109,515, 151,130.88 and 59,214

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Solution

The fourth proportional to 109,515, 151,130.88 and 59,214 is: 81,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515 : 151,130.88 = 59,214 : x
  2. Step 2: Convert to fraction form
    109,515/151,130.88 = 59,214/x
  3. Step 3: Cross multiply
    109,515x = 151,130.88 × 59,214
  4. Step 4: Simplify right side
    109,515x = 8,949,063,928.32
  5. Step 5: Solve for x
    x = 8,949,063,928.32/109,515
  6. Step 6: Final answer
    x = 81,715.42

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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.