Home / 138,647.24-191,333.19-74,985.04

Finding the Fourth Proportional to 138,647.24, 191,333.19 and 74,985.04

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Solution

The fourth proportional to 138,647.24, 191,333.19 and 74,985.04 is: 103,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,647.24 : 191,333.19 = 74,985.04 : x
  2. Step 2: Convert to fraction form
    138,647.24/191,333.19 = 74,985.04/x
  3. Step 3: Cross multiply
    138,647.24x = 191,333.19 × 74,985.04
  4. Step 4: Simplify right side
    138,647.24x = 14,347,127,144.64
  5. Step 5: Solve for x
    x = 14,347,127,144.64/138,647.24
  6. Step 6: Final answer
    x = 103,479.35

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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.