Home / 112,569.72-155,278.53-74,329.62

Finding the Fourth Proportional to 112,569.72, 155,278.53 and 74,329.62

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Solution

The fourth proportional to 112,569.72, 155,278.53 and 74,329.62 is: 102,530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,569.72 : 155,278.53 = 74,329.62 : x
  2. Step 2: Convert to fraction form
    112,569.72/155,278.53 = 74,329.62/x
  3. Step 3: Cross multiply
    112,569.72x = 155,278.53 × 74,329.62
  4. Step 4: Simplify right side
    112,569.72x = 11,541,794,129.06
  5. Step 5: Solve for x
    x = 11,541,794,129.06/112,569.72
  6. Step 6: Final answer
    x = 102,530.18

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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.