Home / 134,501.85-185,613.12-80,787.78

Finding the Fourth Proportional to 134,501.85, 185,613.12 and 80,787.78

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Solution

The fourth proportional to 134,501.85, 185,613.12 and 80,787.78 is: 111,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,501.85 : 185,613.12 = 80,787.78 : x
  2. Step 2: Convert to fraction form
    134,501.85/185,613.12 = 80,787.78/x
  3. Step 3: Cross multiply
    134,501.85x = 185,613.12 × 80,787.78
  4. Step 4: Simplify right side
    134,501.85x = 14,995,271,903.67
  5. Step 5: Solve for x
    x = 14,995,271,903.67/134,501.85
  6. Step 6: Final answer
    x = 111,487.48

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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.