Home / 143,811.60-215,717.40-101,821.20

Finding the Fourth Proportional to 143,811.60, 215,717.40 and 101,821.20

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Solution

The fourth proportional to 143,811.60, 215,717.40 and 101,821.20 is: 152,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,811.60 : 215,717.40 = 101,821.20 : x
  2. Step 2: Convert to fraction form
    143,811.60/215,717.40 = 101,821.20/x
  3. Step 3: Cross multiply
    143,811.60x = 215,717.40 × 101,821.20
  4. Step 4: Simplify right side
    143,811.60x = 21,964,604,528.88
  5. Step 5: Solve for x
    x = 21,964,604,528.88/143,811.60
  6. Step 6: Final answer
    x = 152,731.80

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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.