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Finding the Fourth Proportional to 125,378.66, 186,764.88 and 118,587.89

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Solution

The fourth proportional to 125,378.66, 186,764.88 and 118,587.89 is: 176,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,378.66 : 186,764.88 = 118,587.89 : x
  2. Step 2: Convert to fraction form
    125,378.66/186,764.88 = 118,587.89/x
  3. Step 3: Cross multiply
    125,378.66x = 186,764.88 × 118,587.89
  4. Step 4: Simplify right side
    125,378.66x = 22,148,053,045.30
  5. Step 5: Solve for x
    x = 22,148,053,045.30/125,378.66
  6. Step 6: Final answer
    x = 176,649.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.