Home / 128,029.90-176,677.56-71,440.06

Finding the Fourth Proportional to 128,029.90, 176,677.56 and 71,440.06

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Solution

The fourth proportional to 128,029.90, 176,677.56 and 71,440.06 is: 98,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,029.90 : 176,677.56 = 71,440.06 : x
  2. Step 2: Convert to fraction form
    128,029.90/176,677.56 = 71,440.06/x
  3. Step 3: Cross multiply
    128,029.90x = 176,677.56 × 71,440.06
  4. Step 4: Simplify right side
    128,029.90x = 12,621,855,487.05
  5. Step 5: Solve for x
    x = 12,621,855,487.05/128,029.90
  6. Step 6: Final answer
    x = 98,585.22

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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.