Home / 121,179.10-181,659.30-79,079.35

Finding the Fourth Proportional to 121,179.10, 181,659.30 and 79,079.35

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Solution

The fourth proportional to 121,179.10, 181,659.30 and 79,079.35 is: 118,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,179.10 : 181,659.30 = 79,079.35 : x
  2. Step 2: Convert to fraction form
    121,179.10/181,659.30 = 79,079.35/x
  3. Step 3: Cross multiply
    121,179.10x = 181,659.30 × 79,079.35
  4. Step 4: Simplify right side
    121,179.10x = 14,365,499,365.46
  5. Step 5: Solve for x
    x = 14,365,499,365.46/121,179.10
  6. Step 6: Final answer
    x = 118,547.67

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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.