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Finding the Fourth Proportional to 137,149.50, 189,248.97 and 79,807.39

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Solution

The fourth proportional to 137,149.50, 189,248.97 and 79,807.39 is: 110,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,149.50 : 189,248.97 = 79,807.39 : x
  2. Step 2: Convert to fraction form
    137,149.50/189,248.97 = 79,807.39/x
  3. Step 3: Cross multiply
    137,149.50x = 189,248.97 × 79,807.39
  4. Step 4: Simplify right side
    137,149.50x = 15,103,466,111.49
  5. Step 5: Solve for x
    x = 15,103,466,111.49/137,149.50
  6. Step 6: Final answer
    x = 110,124.10

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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.