Home / 86,729.16-129,360.93-84,104.04

Finding the Fourth Proportional to 86,729.16, 129,360.93 and 84,104.04

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Solution

The fourth proportional to 86,729.16, 129,360.93 and 84,104.04 is: 125,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,729.16 : 129,360.93 = 84,104.04 : x
  2. Step 2: Convert to fraction form
    86,729.16/129,360.93 = 84,104.04/x
  3. Step 3: Cross multiply
    86,729.16x = 129,360.93 × 84,104.04
  4. Step 4: Simplify right side
    86,729.16x = 10,879,776,831.16
  5. Step 5: Solve for x
    x = 10,879,776,831.16/86,729.16
  6. Step 6: Final answer
    x = 125,445.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.