Home / 86,729.76-130,143.85-34,176.15

Finding the Fourth Proportional to 86,729.76, 130,143.85 and 34,176.15

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Solution

The fourth proportional to 86,729.76, 130,143.85 and 34,176.15 is: 51,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,729.76 : 130,143.85 = 34,176.15 : x
  2. Step 2: Convert to fraction form
    86,729.76/130,143.85 = 34,176.15/x
  3. Step 3: Cross multiply
    86,729.76x = 130,143.85 × 34,176.15
  4. Step 4: Simplify right side
    86,729.76x = 4,447,815,739.18
  5. Step 5: Solve for x
    x = 4,447,815,739.18/86,729.76
  6. Step 6: Final answer
    x = 51,283.62

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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.