Home / 84,815.60-127,223.40-69,069.20

Finding the Fourth Proportional to 84,815.60, 127,223.40 and 69,069.20

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Solution

The fourth proportional to 84,815.60, 127,223.40 and 69,069.20 is: 103,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,815.60 : 127,223.40 = 69,069.20 : x
  2. Step 2: Convert to fraction form
    84,815.60/127,223.40 = 69,069.20/x
  3. Step 3: Cross multiply
    84,815.60x = 127,223.40 × 69,069.20
  4. Step 4: Simplify right side
    84,815.60x = 8,787,218,459.28
  5. Step 5: Solve for x
    x = 8,787,218,459.28/84,815.60
  6. Step 6: Final answer
    x = 103,603.80

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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.