Home / 137,972.72-190,404.05-77,539.83

Finding the Fourth Proportional to 137,972.72, 190,404.05 and 77,539.83

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Solution

The fourth proportional to 137,972.72, 190,404.05 and 77,539.83 is: 107,005.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,972.72 : 190,404.05 = 77,539.83 : x
  2. Step 2: Convert to fraction form
    137,972.72/190,404.05 = 77,539.83/x
  3. Step 3: Cross multiply
    137,972.72x = 190,404.05 × 77,539.83
  4. Step 4: Simplify right side
    137,972.72x = 14,763,897,280.61
  5. Step 5: Solve for x
    x = 14,763,897,280.61/137,972.72
  6. Step 6: Final answer
    x = 107,005.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.