Home / 128,036.16-176,673.60-71,449.92

Finding the Fourth Proportional to 128,036.16, 176,673.60 and 71,449.92

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Solution

The fourth proportional to 128,036.16, 176,673.60 and 71,449.92 is: 98,591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.16 : 176,673.60 = 71,449.92 : x
  2. Step 2: Convert to fraction form
    128,036.16/176,673.60 = 71,449.92/x
  3. Step 3: Cross multiply
    128,036.16x = 176,673.60 × 71,449.92
  4. Step 4: Simplify right side
    128,036.16x = 12,623,314,586.11
  5. Step 5: Solve for x
    x = 12,623,314,586.11/128,036.16
  6. Step 6: Final answer
    x = 98,591.79

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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.