Home / 84,928.12-127,407.54-69,271.90

Finding the Fourth Proportional to 84,928.12, 127,407.54 and 69,271.90

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Solution

The fourth proportional to 84,928.12, 127,407.54 and 69,271.90 is: 103,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,928.12 : 127,407.54 = 69,271.90 : x
  2. Step 2: Convert to fraction form
    84,928.12/127,407.54 = 69,271.90/x
  3. Step 3: Cross multiply
    84,928.12x = 127,407.54 × 69,271.90
  4. Step 4: Simplify right side
    84,928.12x = 8,825,762,370.13
  5. Step 5: Solve for x
    x = 8,825,762,370.13/84,928.12
  6. Step 6: Final answer
    x = 103,920.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.