Home / 114,929.80-172,443.30-72,842.20

Finding the Fourth Proportional to 114,929.80, 172,443.30 and 72,842.20

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Solution

The fourth proportional to 114,929.80, 172,443.30 and 72,842.20 is: 109,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,929.80 : 172,443.30 = 72,842.20 : x
  2. Step 2: Convert to fraction form
    114,929.80/172,443.30 = 72,842.20/x
  3. Step 3: Cross multiply
    114,929.80x = 172,443.30 × 72,842.20
  4. Step 4: Simplify right side
    114,929.80x = 12,561,149,347.26
  5. Step 5: Solve for x
    x = 12,561,149,347.26/114,929.80
  6. Step 6: Final answer
    x = 109,294.10

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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.