Home / 122,138.88-182,897.28-80,459.52

Finding the Fourth Proportional to 122,138.88, 182,897.28 and 80,459.52

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Solution

The fourth proportional to 122,138.88, 182,897.28 and 80,459.52 is: 120,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,138.88 : 182,897.28 = 80,459.52 : x
  2. Step 2: Convert to fraction form
    122,138.88/182,897.28 = 80,459.52/x
  3. Step 3: Cross multiply
    122,138.88x = 182,897.28 × 80,459.52
  4. Step 4: Simplify right side
    122,138.88x = 14,715,827,358.11
  5. Step 5: Solve for x
    x = 14,715,827,358.11/122,138.88
  6. Step 6: Final answer
    x = 120,484.38

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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.