Home / 125,071.45-172,418.30-89,199.19

Finding the Fourth Proportional to 125,071.45, 172,418.30 and 89,199.19

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Solution

The fourth proportional to 125,071.45, 172,418.30 and 89,199.19 is: 122,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,071.45 : 172,418.30 = 89,199.19 : x
  2. Step 2: Convert to fraction form
    125,071.45/172,418.30 = 89,199.19/x
  3. Step 3: Cross multiply
    125,071.45x = 172,418.30 × 89,199.19
  4. Step 4: Simplify right side
    125,071.45x = 15,379,571,826.94
  5. Step 5: Solve for x
    x = 15,379,571,826.94/125,071.45
  6. Step 6: Final answer
    x = 122,966.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.