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Finding the Fourth Proportional to 124,805.80, 187,208.70 and 72,317.80

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Solution

The fourth proportional to 124,805.80, 187,208.70 and 72,317.80 is: 108,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,805.80 : 187,208.70 = 72,317.80 : x
  2. Step 2: Convert to fraction form
    124,805.80/187,208.70 = 72,317.80/x
  3. Step 3: Cross multiply
    124,805.80x = 187,208.70 × 72,317.80
  4. Step 4: Simplify right side
    124,805.80x = 13,538,521,324.86
  5. Step 5: Solve for x
    x = 13,538,521,324.86/124,805.80
  6. Step 6: Final answer
    x = 108,476.70

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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.