Home / 130,499.46-180,045.90-90,198.72

Finding the Fourth Proportional to 130,499.46, 180,045.90 and 90,198.72

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Solution

The fourth proportional to 130,499.46, 180,045.90 and 90,198.72 is: 124,444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,499.46 : 180,045.90 = 90,198.72 : x
  2. Step 2: Convert to fraction form
    130,499.46/180,045.90 = 90,198.72/x
  3. Step 3: Cross multiply
    130,499.46x = 180,045.90 × 90,198.72
  4. Step 4: Simplify right side
    130,499.46x = 16,239,909,721.25
  5. Step 5: Solve for x
    x = 16,239,909,721.25/130,499.46
  6. Step 6: Final answer
    x = 124,444.27

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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.