Home / 128,040.97-176,701.35-71,463.28

Finding the Fourth Proportional to 128,040.97, 176,701.35 and 71,463.28

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Solution

The fourth proportional to 128,040.97, 176,701.35 and 71,463.28 is: 98,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,040.97 : 176,701.35 = 71,463.28 : x
  2. Step 2: Convert to fraction form
    128,040.97/176,701.35 = 71,463.28/x
  3. Step 3: Cross multiply
    128,040.97x = 176,701.35 × 71,463.28
  4. Step 4: Simplify right side
    128,040.97x = 12,627,658,051.43
  5. Step 5: Solve for x
    x = 12,627,658,051.43/128,040.97
  6. Step 6: Final answer
    x = 98,622.01

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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.