Home / 145,499.10-218,133.45-79,835.10

Finding the Fourth Proportional to 145,499.10, 218,133.45 and 79,835.10

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Solution

The fourth proportional to 145,499.10, 218,133.45 and 79,835.10 is: 119,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,499.10 : 218,133.45 = 79,835.10 : x
  2. Step 2: Convert to fraction form
    145,499.10/218,133.45 = 79,835.10/x
  3. Step 3: Cross multiply
    145,499.10x = 218,133.45 × 79,835.10
  4. Step 4: Simplify right side
    145,499.10x = 17,414,705,794.10
  5. Step 5: Solve for x
    x = 17,414,705,794.10/145,499.10
  6. Step 6: Final answer
    x = 119,689.44

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1.5x scale

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.