Home / 123,724.80-185,587.20-79,438.05

Finding the Fourth Proportional to 123,724.80, 185,587.20 and 79,438.05

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Solution

The fourth proportional to 123,724.80, 185,587.20 and 79,438.05 is: 119,157.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,724.80 : 185,587.20 = 79,438.05 : x
  2. Step 2: Convert to fraction form
    123,724.80/185,587.20 = 79,438.05/x
  3. Step 3: Cross multiply
    123,724.80x = 185,587.20 × 79,438.05
  4. Step 4: Simplify right side
    123,724.80x = 14,742,685,272.96
  5. Step 5: Solve for x
    x = 14,742,685,272.96/123,724.80
  6. Step 6: Final answer
    x = 119,157.08

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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.