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Finding the Fourth Proportional to 128,042.46, 176,698.74 and 71,453.82

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Solution

The fourth proportional to 128,042.46, 176,698.74 and 71,453.82 is: 98,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.46 : 176,698.74 = 71,453.82 : x
  2. Step 2: Convert to fraction form
    128,042.46/176,698.74 = 71,453.82/x
  3. Step 3: Cross multiply
    128,042.46x = 176,698.74 × 71,453.82
  4. Step 4: Simplify right side
    128,042.46x = 12,625,799,962.19
  5. Step 5: Solve for x
    x = 12,625,799,962.19/128,042.46
  6. Step 6: Final answer
    x = 98,606.35

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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.