Home / 128,146.16-176,841.84-71,557.52

Finding the Fourth Proportional to 128,146.16, 176,841.84 and 71,557.52

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Solution

The fourth proportional to 128,146.16, 176,841.84 and 71,557.52 is: 98,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.16 : 176,841.84 = 71,557.52 : x
  2. Step 2: Convert to fraction form
    128,146.16/176,841.84 = 71,557.52/x
  3. Step 3: Cross multiply
    128,146.16x = 176,841.84 × 71,557.52
  4. Step 4: Simplify right side
    128,146.16x = 12,654,363,502.64
  5. Step 5: Solve for x
    x = 12,654,363,502.64/128,146.16
  6. Step 6: Final answer
    x = 98,749.46

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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.