Home / 141,838.70-212,758.05-78,853.10

Finding the Fourth Proportional to 141,838.70, 212,758.05 and 78,853.10

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Solution

The fourth proportional to 141,838.70, 212,758.05 and 78,853.10 is: 118,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,838.70 : 212,758.05 = 78,853.10 : x
  2. Step 2: Convert to fraction form
    141,838.70/212,758.05 = 78,853.10/x
  3. Step 3: Cross multiply
    141,838.70x = 212,758.05 × 78,853.10
  4. Step 4: Simplify right side
    141,838.70x = 16,776,631,792.46
  5. Step 5: Solve for x
    x = 16,776,631,792.46/141,838.70
  6. Step 6: Final answer
    x = 118,279.65

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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.