Home / 143,971.20-216,064.80-73,814.40

Finding the Fourth Proportional to 143,971.20, 216,064.80 and 73,814.40

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Solution

The fourth proportional to 143,971.20, 216,064.80 and 73,814.40 is: 110,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,971.20 : 216,064.80 = 73,814.40 : x
  2. Step 2: Convert to fraction form
    143,971.20/216,064.80 = 73,814.40/x
  3. Step 3: Cross multiply
    143,971.20x = 216,064.80 × 73,814.40
  4. Step 4: Simplify right side
    143,971.20x = 15,948,693,573.12
  5. Step 5: Solve for x
    x = 15,948,693,573.12/143,971.20
  6. Step 6: Final answer
    x = 110,776.97

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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.