Home / 120,382,728.90-166,142,348.01-71,490,156.90

Finding the Fourth Proportional to 120,382,728.90, 166,142,348.01 and 71,490,156.90

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Solution

The fourth proportional to 120,382,728.90, 166,142,348.01 and 71,490,156.90 is: 98,664,838.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382,728.90 : 166,142,348.01 = 71,490,156.90 : x
  2. Step 2: Convert to fraction form
    120,382,728.90/166,142,348.01 = 71,490,156.90/x
  3. Step 3: Cross multiply
    120,382,728.90x = 166,142,348.01 × 71,490,156.90
  4. Step 4: Simplify right side
    120,382,728.90x = 11,877,542,526,969,304
  5. Step 5: Solve for x
    x = 11,877,542,526,969,304/120,382,728.90
  6. Step 6: Final answer
    x = 98,664,838.68

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1.5x scale

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.