Home / 128,036.20-176,687.22-71,446.36

Finding the Fourth Proportional to 128,036.20, 176,687.22 and 71,446.36

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Solution

The fourth proportional to 128,036.20, 176,687.22 and 71,446.36 is: 98,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.20 : 176,687.22 = 71,446.36 : x
  2. Step 2: Convert to fraction form
    128,036.20/176,687.22 = 71,446.36/x
  3. Step 3: Cross multiply
    128,036.20x = 176,687.22 × 71,446.36
  4. Step 4: Simplify right side
    128,036.20x = 12,623,658,727.52
  5. Step 5: Solve for x
    x = 12,623,658,727.52/128,036.20
  6. Step 6: Final answer
    x = 98,594.45

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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.