Home / 127,638.81-176,139.84-71,050.20

Finding the Fourth Proportional to 127,638.81, 176,139.84 and 71,050.20

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Solution

The fourth proportional to 127,638.81, 176,139.84 and 71,050.20 is: 98,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638.81 : 176,139.84 = 71,050.20 : x
  2. Step 2: Convert to fraction form
    127,638.81/176,139.84 = 71,050.20/x
  3. Step 3: Cross multiply
    127,638.81x = 176,139.84 × 71,050.20
  4. Step 4: Simplify right side
    127,638.81x = 12,514,770,859.97
  5. Step 5: Solve for x
    x = 12,514,770,859.97/127,638.81
  6. Step 6: Final answer
    x = 98,048.32

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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.