Home / 140,838.40-211,257.60-84,851.20

Finding the Fourth Proportional to 140,838.40, 211,257.60 and 84,851.20

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Solution

The fourth proportional to 140,838.40, 211,257.60 and 84,851.20 is: 127,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,838.40 : 211,257.60 = 84,851.20 : x
  2. Step 2: Convert to fraction form
    140,838.40/211,257.60 = 84,851.20/x
  3. Step 3: Cross multiply
    140,838.40x = 211,257.60 × 84,851.20
  4. Step 4: Simplify right side
    140,838.40x = 17,925,460,869.12
  5. Step 5: Solve for x
    x = 17,925,460,869.12/140,838.40
  6. Step 6: Final answer
    x = 127,276.80

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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.