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Finding the Fourth Proportional to 127,902.80, 191,909.40 and 68,669.24

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Solution

The fourth proportional to 127,902.80, 191,909.40 and 68,669.24 is: 103,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,902.80 : 191,909.40 = 68,669.24 : x
  2. Step 2: Convert to fraction form
    127,902.80/191,909.40 = 68,669.24/x
  3. Step 3: Cross multiply
    127,902.80x = 191,909.40 × 68,669.24
  4. Step 4: Simplify right side
    127,902.80x = 13,178,272,646.86
  5. Step 5: Solve for x
    x = 13,178,272,646.86/127,902.80
  6. Step 6: Final answer
    x = 103,033.50

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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.