Home / 121,434.30-182,017.80-42,507.90

Finding the Fourth Proportional to 121,434.30, 182,017.80 and 42,507.90

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Solution

The fourth proportional to 121,434.30, 182,017.80 and 42,507.90 is: 63,715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,434.30 : 182,017.80 = 42,507.90 : x
  2. Step 2: Convert to fraction form
    121,434.30/182,017.80 = 42,507.90/x
  3. Step 3: Cross multiply
    121,434.30x = 182,017.80 × 42,507.90
  4. Step 4: Simplify right side
    121,434.30x = 7,737,194,440.62
  5. Step 5: Solve for x
    x = 7,737,194,440.62/121,434.30
  6. Step 6: Final answer
    x = 63,715.07

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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.