Home / 131,120,728.96-180,941,862.72-72,382,132.48

Finding the Fourth Proportional to 131,120,728.96, 180,941,862.72 and 72,382,132.48

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Solution

The fourth proportional to 131,120,728.96, 180,941,862.72 and 72,382,132.48 is: 99,884,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,120,728.96 : 180,941,862.72 = 72,382,132.48 : x
  2. Step 2: Convert to fraction form
    131,120,728.96/180,941,862.72 = 72,382,132.48/x
  3. Step 3: Cross multiply
    131,120,728.96x = 180,941,862.72 × 72,382,132.48
  4. Step 4: Simplify right side
    131,120,728.96x = 13,096,957,878,577,014
  5. Step 5: Solve for x
    x = 13,096,957,878,577,014/131,120,728.96
  6. Step 6: Final answer
    x = 99,884,724.43

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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.