Home / 142,279.70-196,346.50-77,748.94

Finding the Fourth Proportional to 142,279.70, 196,346.50 and 77,748.94

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Solution

The fourth proportional to 142,279.70, 196,346.50 and 77,748.94 is: 107,293.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,279.70 : 196,346.50 = 77,748.94 : x
  2. Step 2: Convert to fraction form
    142,279.70/196,346.50 = 77,748.94/x
  3. Step 3: Cross multiply
    142,279.70x = 196,346.50 × 77,748.94
  4. Step 4: Simplify right side
    142,279.70x = 15,265,732,247.71
  5. Step 5: Solve for x
    x = 15,265,732,247.71/142,279.70
  6. Step 6: Final answer
    x = 107,293.82

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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.