Home / 88,189.20-121,702.41-47,903.76

Finding the Fourth Proportional to 88,189.20, 121,702.41 and 47,903.76

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Solution

The fourth proportional to 88,189.20, 121,702.41 and 47,903.76 is: 66,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.20 : 121,702.41 = 47,903.76 : x
  2. Step 2: Convert to fraction form
    88,189.20/121,702.41 = 47,903.76/x
  3. Step 3: Cross multiply
    88,189.20x = 121,702.41 × 47,903.76
  4. Step 4: Simplify right side
    88,189.20x = 5,830,003,040.06
  5. Step 5: Solve for x
    x = 5,830,003,040.06/88,189.20
  6. Step 6: Final answer
    x = 66,107.90

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1.5x scale

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.