Home / 112,679.68-155,522.64-74,445.52

Finding the Fourth Proportional to 112,679.68, 155,522.64 and 74,445.52

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Solution

The fourth proportional to 112,679.68, 155,522.64 and 74,445.52 is: 102,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,679.68 : 155,522.64 = 74,445.52 : x
  2. Step 2: Convert to fraction form
    112,679.68/155,522.64 = 74,445.52/x
  3. Step 3: Cross multiply
    112,679.68x = 155,522.64 × 74,445.52
  4. Step 4: Simplify right side
    112,679.68x = 11,577,963,806.57
  5. Step 5: Solve for x
    x = 11,577,963,806.57/112,679.68
  6. Step 6: Final answer
    x = 102,751.12

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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.