Home / 140,741.40-194,223.84-77,085.12

Finding the Fourth Proportional to 140,741.40, 194,223.84 and 77,085.12

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Solution

The fourth proportional to 140,741.40, 194,223.84 and 77,085.12 is: 106,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,741.40 : 194,223.84 = 77,085.12 : x
  2. Step 2: Convert to fraction form
    140,741.40/194,223.84 = 77,085.12/x
  3. Step 3: Cross multiply
    140,741.40x = 194,223.84 × 77,085.12
  4. Step 4: Simplify right side
    140,741.40x = 14,971,768,013.26
  5. Step 5: Solve for x
    x = 14,971,768,013.26/140,741.40
  6. Step 6: Final answer
    x = 106,377.85

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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.