Home / 127,677.91-176,006.48-81,730.78

Finding the Fourth Proportional to 127,677.91, 176,006.48 and 81,730.78

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Solution

The fourth proportional to 127,677.91, 176,006.48 and 81,730.78 is: 112,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,677.91 : 176,006.48 = 81,730.78 : x
  2. Step 2: Convert to fraction form
    127,677.91/176,006.48 = 81,730.78/x
  3. Step 3: Cross multiply
    127,677.91x = 176,006.48 × 81,730.78
  4. Step 4: Simplify right side
    127,677.91x = 14,385,147,131.14
  5. Step 5: Solve for x
    x = 14,385,147,131.14/127,677.91
  6. Step 6: Final answer
    x = 112,667.47

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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.