Home / 131,468.70-197,203.05-78,851.10

Finding the Fourth Proportional to 131,468.70, 197,203.05 and 78,851.10

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Solution

The fourth proportional to 131,468.70, 197,203.05 and 78,851.10 is: 118,276.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,468.70 : 197,203.05 = 78,851.10 : x
  2. Step 2: Convert to fraction form
    131,468.70/197,203.05 = 78,851.10/x
  3. Step 3: Cross multiply
    131,468.70x = 197,203.05 × 78,851.10
  4. Step 4: Simplify right side
    131,468.70x = 15,549,677,415.86
  5. Step 5: Solve for x
    x = 15,549,677,415.86/131,468.70
  6. Step 6: Final answer
    x = 118,276.65

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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.