Home / 121,070.16-181,376.28-68,517.36

Finding the Fourth Proportional to 121,070.16, 181,376.28 and 68,517.36

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Solution

The fourth proportional to 121,070.16, 181,376.28 and 68,517.36 is: 102,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,070.16 : 181,376.28 = 68,517.36 : x
  2. Step 2: Convert to fraction form
    121,070.16/181,376.28 = 68,517.36/x
  3. Step 3: Cross multiply
    121,070.16x = 181,376.28 × 68,517.36
  4. Step 4: Simplify right side
    121,070.16x = 12,427,423,872.22
  5. Step 5: Solve for x
    x = 12,427,423,872.22/121,070.16
  6. Step 6: Final answer
    x = 102,646.46

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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.