Home / 86,231,479.20-129,347,218.80-82,830,256.80

Finding the Fourth Proportional to 86,231,479.20, 129,347,218.80 and 82,830,256.80

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Solution

The fourth proportional to 86,231,479.20, 129,347,218.80 and 82,830,256.80 is: 124,245,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,231,479.20 : 129,347,218.80 = 82,830,256.80 : x
  2. Step 2: Convert to fraction form
    86,231,479.20/129,347,218.80 = 82,830,256.80/x
  3. Step 3: Cross multiply
    86,231,479.20x = 129,347,218.80 × 82,830,256.80
  4. Step 4: Simplify right side
    86,231,479.20x = 10,713,863,349,569,788
  5. Step 5: Solve for x
    x = 10,713,863,349,569,788/86,231,479.20
  6. Step 6: Final answer
    x = 124,245,385.20

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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.