Home / 142,346.13-196,437.70-77,815.65

Finding the Fourth Proportional to 142,346.13, 196,437.70 and 77,815.65

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Solution

The fourth proportional to 142,346.13, 196,437.70 and 77,815.65 is: 107,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,346.13 : 196,437.70 = 77,815.65 : x
  2. Step 2: Convert to fraction form
    142,346.13/196,437.70 = 77,815.65/x
  3. Step 3: Cross multiply
    142,346.13x = 196,437.70 × 77,815.65
  4. Step 4: Simplify right side
    142,346.13x = 15,285,927,310.01
  5. Step 5: Solve for x
    x = 15,285,927,310.01/142,346.13
  6. Step 6: Final answer
    x = 107,385.62

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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.