Home / 157,621.47-217,517.31-86,001.45

Finding the Fourth Proportional to 157,621.47, 217,517.31 and 86,001.45

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Solution

The fourth proportional to 157,621.47, 217,517.31 and 86,001.45 is: 118,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,621.47 : 217,517.31 = 86,001.45 : x
  2. Step 2: Convert to fraction form
    157,621.47/217,517.31 = 86,001.45/x
  3. Step 3: Cross multiply
    157,621.47x = 217,517.31 × 86,001.45
  4. Step 4: Simplify right side
    157,621.47x = 18,706,804,060.10
  5. Step 5: Solve for x
    x = 18,706,804,060.10/157,621.47
  6. Step 6: Final answer
    x = 118,681.83

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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.