Home / 128,117.16-176,801.82-71,528.52

Finding the Fourth Proportional to 128,117.16, 176,801.82 and 71,528.52

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Solution

The fourth proportional to 128,117.16, 176,801.82 and 71,528.52 is: 98,709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.16 : 176,801.82 = 71,528.52 : x
  2. Step 2: Convert to fraction form
    128,117.16/176,801.82 = 71,528.52/x
  3. Step 3: Cross multiply
    128,117.16x = 176,801.82 × 71,528.52
  4. Step 4: Simplify right side
    128,117.16x = 12,646,372,517.91
  5. Step 5: Solve for x
    x = 12,646,372,517.91/128,117.16
  6. Step 6: Final answer
    x = 98,709.44

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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.