Home / 84,815.60-127,223.40-76,359.20

Finding the Fourth Proportional to 84,815.60, 127,223.40 and 76,359.20

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Solution

The fourth proportional to 84,815.60, 127,223.40 and 76,359.20 is: 114,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,815.60 : 127,223.40 = 76,359.20 : x
  2. Step 2: Convert to fraction form
    84,815.60/127,223.40 = 76,359.20/x
  3. Step 3: Cross multiply
    84,815.60x = 127,223.40 × 76,359.20
  4. Step 4: Simplify right side
    84,815.60x = 9,714,677,045.28
  5. Step 5: Solve for x
    x = 9,714,677,045.28/84,815.60
  6. Step 6: Final answer
    x = 114,538.80

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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.