Home / 145,966.20-218,947.14-79,390.68

Finding the Fourth Proportional to 145,966.20, 218,947.14 and 79,390.68

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Solution

The fourth proportional to 145,966.20, 218,947.14 and 79,390.68 is: 119,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,966.20 : 218,947.14 = 79,390.68 : x
  2. Step 2: Convert to fraction form
    145,966.20/218,947.14 = 79,390.68/x
  3. Step 3: Cross multiply
    145,966.20x = 218,947.14 × 79,390.68
  4. Step 4: Simplify right side
    145,966.20x = 17,382,362,328.66
  5. Step 5: Solve for x
    x = 17,382,362,328.66/145,966.20
  6. Step 6: Final answer
    x = 119,084.85

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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.