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Finding the Fourth Proportional to 84,862.80, 127,294.20 and 69,829.20

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Solution

The fourth proportional to 84,862.80, 127,294.20 and 69,829.20 is: 104,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,862.80 : 127,294.20 = 69,829.20 : x
  2. Step 2: Convert to fraction form
    84,862.80/127,294.20 = 69,829.20/x
  3. Step 3: Cross multiply
    84,862.80x = 127,294.20 × 69,829.20
  4. Step 4: Simplify right side
    84,862.80x = 8,888,852,150.64
  5. Step 5: Solve for x
    x = 8,888,852,150.64/84,862.80
  6. Step 6: Final answer
    x = 104,743.80

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1.5x scale

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.