Home / 131,503.90-197,255.85-78,886.30

Finding the Fourth Proportional to 131,503.90, 197,255.85 and 78,886.30

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Solution

The fourth proportional to 131,503.90, 197,255.85 and 78,886.30 is: 118,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,503.90 : 197,255.85 = 78,886.30 : x
  2. Step 2: Convert to fraction form
    131,503.90/197,255.85 = 78,886.30/x
  3. Step 3: Cross multiply
    131,503.90x = 197,255.85 × 78,886.30
  4. Step 4: Simplify right side
    131,503.90x = 15,560,784,159.86
  5. Step 5: Solve for x
    x = 15,560,784,159.86/131,503.90
  6. Step 6: Final answer
    x = 118,329.45

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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.