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Finding the Fourth Proportional to 121,294.90, 181,877.55 and 42,411.70

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Solution

The fourth proportional to 121,294.90, 181,877.55 and 42,411.70 is: 63,594.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,294.90 : 181,877.55 = 42,411.70 : x
  2. Step 2: Convert to fraction form
    121,294.90/181,877.55 = 42,411.70/x
  3. Step 3: Cross multiply
    121,294.90x = 181,877.55 × 42,411.70
  4. Step 4: Simplify right side
    121,294.90x = 7,713,736,087.34
  5. Step 5: Solve for x
    x = 7,713,736,087.34/121,294.90
  6. Step 6: Final answer
    x = 63,594.89

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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.