Home / 128,448.17-177,254.83-71,089.90

Finding the Fourth Proportional to 128,448.17, 177,254.83 and 71,089.90

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Solution

The fourth proportional to 128,448.17, 177,254.83 and 71,089.90 is: 98,102.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,448.17 : 177,254.83 = 71,089.90 : x
  2. Step 2: Convert to fraction form
    128,448.17/177,254.83 = 71,089.90/x
  3. Step 3: Cross multiply
    128,448.17x = 177,254.83 × 71,089.90
  4. Step 4: Simplify right side
    128,448.17x = 12,601,026,897.49
  5. Step 5: Solve for x
    x = 12,601,026,897.49/128,448.17
  6. Step 6: Final answer
    x = 98,102.04

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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.