Home / 85,253.46-117,612.45-81,300.66

Finding the Fourth Proportional to 85,253.46, 117,612.45 and 81,300.66

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Solution

The fourth proportional to 85,253.46, 117,612.45 and 81,300.66 is: 112,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,253.46 : 117,612.45 = 81,300.66 : x
  2. Step 2: Convert to fraction form
    85,253.46/117,612.45 = 81,300.66/x
  3. Step 3: Cross multiply
    85,253.46x = 117,612.45 × 81,300.66
  4. Step 4: Simplify right side
    85,253.46x = 9,561,969,809.22
  5. Step 5: Solve for x
    x = 9,561,969,809.22/85,253.46
  6. Step 6: Final answer
    x = 112,159.32

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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.