Home / 124,740.88-187,140.48-85,316.56

Finding the Fourth Proportional to 124,740.88, 187,140.48 and 85,316.56

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Solution

The fourth proportional to 124,740.88, 187,140.48 and 85,316.56 is: 127,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,740.88 : 187,140.48 = 85,316.56 : x
  2. Step 2: Convert to fraction form
    124,740.88/187,140.48 = 85,316.56/x
  3. Step 3: Cross multiply
    124,740.88x = 187,140.48 × 85,316.56
  4. Step 4: Simplify right side
    124,740.88x = 15,966,181,990.35
  5. Step 5: Solve for x
    x = 15,966,181,990.35/124,740.88
  6. Step 6: Final answer
    x = 127,994.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.