Home / 112,845.60-155,721.46-65,114.36

Finding the Fourth Proportional to 112,845.60, 155,721.46 and 65,114.36

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Solution

The fourth proportional to 112,845.60, 155,721.46 and 65,114.36 is: 89,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,845.60 : 155,721.46 = 65,114.36 : x
  2. Step 2: Convert to fraction form
    112,845.60/155,721.46 = 65,114.36/x
  3. Step 3: Cross multiply
    112,845.60x = 155,721.46 × 65,114.36
  4. Step 4: Simplify right side
    112,845.60x = 10,139,703,206.17
  5. Step 5: Solve for x
    x = 10,139,703,206.17/112,845.60
  6. Step 6: Final answer
    x = 89,854.66

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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.