Home / 131,498.90-197,248.35-78,881.30

Finding the Fourth Proportional to 131,498.90, 197,248.35 and 78,881.30

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Solution

The fourth proportional to 131,498.90, 197,248.35 and 78,881.30 is: 118,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,498.90 : 197,248.35 = 78,881.30 : x
  2. Step 2: Convert to fraction form
    131,498.90/197,248.35 = 78,881.30/x
  3. Step 3: Cross multiply
    131,498.90x = 197,248.35 × 78,881.30
  4. Step 4: Simplify right side
    131,498.90x = 15,559,206,270.86
  5. Step 5: Solve for x
    x = 15,559,206,270.86/131,498.90
  6. Step 6: Final answer
    x = 118,321.95

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1.5x scale

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.