Home / 130,543.44-180,178.92-73,986

Finding the Fourth Proportional to 130,543.44, 180,178.92 and 73,986

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Solution

The fourth proportional to 130,543.44, 180,178.92 and 73,986 is: 102,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,543.44 : 180,178.92 = 73,986 : x
  2. Step 2: Convert to fraction form
    130,543.44/180,178.92 = 73,986/x
  3. Step 3: Cross multiply
    130,543.44x = 180,178.92 × 73,986
  4. Step 4: Simplify right side
    130,543.44x = 13,330,717,575.12
  5. Step 5: Solve for x
    x = 13,330,717,575.12/130,543.44
  6. Step 6: Final answer
    x = 102,117.10

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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.