Home / 142,461.05-196,590.24-78,794.78

Finding the Fourth Proportional to 142,461.05, 196,590.24 and 78,794.78

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Solution

The fourth proportional to 142,461.05, 196,590.24 and 78,794.78 is: 108,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,461.05 : 196,590.24 = 78,794.78 : x
  2. Step 2: Convert to fraction form
    142,461.05/196,590.24 = 78,794.78/x
  3. Step 3: Cross multiply
    142,461.05x = 196,590.24 × 78,794.78
  4. Step 4: Simplify right side
    142,461.05x = 15,490,283,728.00
  5. Step 5: Solve for x
    x = 15,490,283,728.00/142,461.05
  6. Step 6: Final answer
    x = 108,733.47

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1.5x scale

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.