Home / 121,434.70-182,152.05-77,257.30

Finding the Fourth Proportional to 121,434.70, 182,152.05 and 77,257.30

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Solution

The fourth proportional to 121,434.70, 182,152.05 and 77,257.30 is: 115,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,434.70 : 182,152.05 = 77,257.30 : x
  2. Step 2: Convert to fraction form
    121,434.70/182,152.05 = 77,257.30/x
  3. Step 3: Cross multiply
    121,434.70x = 182,152.05 × 77,257.30
  4. Step 4: Simplify right side
    121,434.70x = 14,072,575,572.47
  5. Step 5: Solve for x
    x = 14,072,575,572.47/121,434.70
  6. Step 6: Final answer
    x = 115,885.95

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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.