Home / 128,931.24-177,922.30-71,567.22

Finding the Fourth Proportional to 128,931.24, 177,922.30 and 71,567.22

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Solution

The fourth proportional to 128,931.24, 177,922.30 and 71,567.22 is: 98,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,931.24 : 177,922.30 = 71,567.22 : x
  2. Step 2: Convert to fraction form
    128,931.24/177,922.30 = 71,567.22/x
  3. Step 3: Cross multiply
    128,931.24x = 177,922.30 × 71,567.22
  4. Step 4: Simplify right side
    128,931.24x = 12,733,404,387.01
  5. Step 5: Solve for x
    x = 12,733,404,387.01/128,931.24
  6. Step 6: Final answer
    x = 98,761.20

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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.