Home / 120,390.04-180,598.89-70,470.59

Finding the Fourth Proportional to 120,390.04, 180,598.89 and 70,470.59

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Solution

The fourth proportional to 120,390.04, 180,598.89 and 70,470.59 is: 105,713.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,390.04 : 180,598.89 = 70,470.59 : x
  2. Step 2: Convert to fraction form
    120,390.04/180,598.89 = 70,470.59/x
  3. Step 3: Cross multiply
    120,390.04x = 180,598.89 × 70,470.59
  4. Step 4: Simplify right side
    120,390.04x = 12,726,910,331.65
  5. Step 5: Solve for x
    x = 12,726,910,331.65/120,390.04
  6. Step 6: Final answer
    x = 105,713.98

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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.