Home / 121,769.40-182,672.28-42,869.70

Finding the Fourth Proportional to 121,769.40, 182,672.28 and 42,869.70

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Solution

The fourth proportional to 121,769.40, 182,672.28 and 42,869.70 is: 64,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,769.40 : 182,672.28 = 42,869.70 : x
  2. Step 2: Convert to fraction form
    121,769.40/182,672.28 = 42,869.70/x
  3. Step 3: Cross multiply
    121,769.40x = 182,672.28 × 42,869.70
  4. Step 4: Simplify right side
    121,769.40x = 7,831,105,841.92
  5. Step 5: Solve for x
    x = 7,831,105,841.92/121,769.40
  6. Step 6: Final answer
    x = 64,310.95

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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.