Home / 128,261.91-177,001.15-71,673.29

Finding the Fourth Proportional to 128,261.91, 177,001.15 and 71,673.29

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Solution

The fourth proportional to 128,261.91, 177,001.15 and 71,673.29 is: 98,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,261.91 : 177,001.15 = 71,673.29 : x
  2. Step 2: Convert to fraction form
    128,261.91/177,001.15 = 71,673.29/x
  3. Step 3: Cross multiply
    128,261.91x = 177,001.15 × 71,673.29
  4. Step 4: Simplify right side
    128,261.91x = 12,686,254,754.28
  5. Step 5: Solve for x
    x = 12,686,254,754.28/128,261.91
  6. Step 6: Final answer
    x = 98,908.98

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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.