Home / 112,822.54-155,701.65-65,077.90

Finding the Fourth Proportional to 112,822.54, 155,701.65 and 65,077.90

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Solution

The fourth proportional to 112,822.54, 155,701.65 and 65,077.90 is: 89,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,822.54 : 155,701.65 = 65,077.90 : x
  2. Step 2: Convert to fraction form
    112,822.54/155,701.65 = 65,077.90/x
  3. Step 3: Cross multiply
    112,822.54x = 155,701.65 × 65,077.90
  4. Step 4: Simplify right side
    112,822.54x = 10,132,736,408.54
  5. Step 5: Solve for x
    x = 10,132,736,408.54/112,822.54
  6. Step 6: Final answer
    x = 89,811.28

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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.