Home / 172,421.04-258,641.28-54,089.76

Finding the Fourth Proportional to 172,421.04, 258,641.28 and 54,089.76

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Solution

The fourth proportional to 172,421.04, 258,641.28 and 54,089.76 is: 81,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,421.04 : 258,641.28 = 54,089.76 : x
  2. Step 2: Convert to fraction form
    172,421.04/258,641.28 = 54,089.76/x
  3. Step 3: Cross multiply
    172,421.04x = 258,641.28 × 54,089.76
  4. Step 4: Simplify right side
    172,421.04x = 13,989,844,761.29
  5. Step 5: Solve for x
    x = 13,989,844,761.29/172,421.04
  6. Step 6: Final answer
    x = 81,137.69

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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.