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Finding the Fourth Proportional to 123,415.13, 185,123.30 and 29,920.88

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Solution

The fourth proportional to 123,415.13, 185,123.30 and 29,920.88 is: 44,881.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,415.13 : 185,123.30 = 29,920.88 : x
  2. Step 2: Convert to fraction form
    123,415.13/185,123.30 = 29,920.88/x
  3. Step 3: Cross multiply
    123,415.13x = 185,123.30 × 29,920.88
  4. Step 4: Simplify right side
    123,415.13x = 5,539,050,969.28
  5. Step 5: Solve for x
    x = 5,539,050,969.28/123,415.13
  6. Step 6: Final answer
    x = 44,881.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.