Home / 121,569.24-182,417.04-91,978.32

Finding the Fourth Proportional to 121,569.24, 182,417.04 and 91,978.32

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Solution

The fourth proportional to 121,569.24, 182,417.04 and 91,978.32 is: 138,015.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,569.24 : 182,417.04 = 91,978.32 : x
  2. Step 2: Convert to fraction form
    121,569.24/182,417.04 = 91,978.32/x
  3. Step 3: Cross multiply
    121,569.24x = 182,417.04 × 91,978.32
  4. Step 4: Simplify right side
    121,569.24x = 16,778,412,878.57
  5. Step 5: Solve for x
    x = 16,778,412,878.57/121,569.24
  6. Step 6: Final answer
    x = 138,015.28

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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.