Home / 128,115.90-176,796.27-71,526.06

Finding the Fourth Proportional to 128,115.90, 176,796.27 and 71,526.06

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Solution

The fourth proportional to 128,115.90, 176,796.27 and 71,526.06 is: 98,703.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.90 : 176,796.27 = 71,526.06 : x
  2. Step 2: Convert to fraction form
    128,115.90/176,796.27 = 71,526.06/x
  3. Step 3: Cross multiply
    128,115.90x = 176,796.27 × 71,526.06
  4. Step 4: Simplify right side
    128,115.90x = 12,645,540,615.80
  5. Step 5: Solve for x
    x = 12,645,540,615.80/128,115.90
  6. Step 6: Final answer
    x = 98,703.91

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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.