Home / 99,129.42-136,774.98-56,687.04

Finding the Fourth Proportional to 99,129.42, 136,774.98 and 56,687.04

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Solution

The fourth proportional to 99,129.42, 136,774.98 and 56,687.04 is: 78,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,129.42 : 136,774.98 = 56,687.04 : x
  2. Step 2: Convert to fraction form
    99,129.42/136,774.98 = 56,687.04/x
  3. Step 3: Cross multiply
    99,129.42x = 136,774.98 × 56,687.04
  4. Step 4: Simplify right side
    99,129.42x = 7,753,368,762.26
  5. Step 5: Solve for x
    x = 7,753,368,762.26/99,129.42
  6. Step 6: Final answer
    x = 78,214.61

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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.