Home / 138,830.10-208,342.35-60,000.90

Finding the Fourth Proportional to 138,830.10, 208,342.35 and 60,000.90

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Solution

The fourth proportional to 138,830.10, 208,342.35 and 60,000.90 is: 90,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,830.10 : 208,342.35 = 60,000.90 : x
  2. Step 2: Convert to fraction form
    138,830.10/208,342.35 = 60,000.90/x
  3. Step 3: Cross multiply
    138,830.10x = 208,342.35 × 60,000.90
  4. Step 4: Simplify right side
    138,830.10x = 12,500,728,508.12
  5. Step 5: Solve for x
    x = 12,500,728,508.12/138,830.10
  6. Step 6: Final answer
    x = 90,043.36

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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.