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Finding the Fourth Proportional to 123,425.60, 170,323.88 and 73,124.60

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Solution

The fourth proportional to 123,425.60, 170,323.88 and 73,124.60 is: 100,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,425.60 : 170,323.88 = 73,124.60 : x
  2. Step 2: Convert to fraction form
    123,425.60/170,323.88 = 73,124.60/x
  3. Step 3: Cross multiply
    123,425.60x = 170,323.88 × 73,124.60
  4. Step 4: Simplify right side
    123,425.60x = 12,454,865,595.45
  5. Step 5: Solve for x
    x = 12,454,865,595.45/123,425.60
  6. Step 6: Final answer
    x = 100,909.91

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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.