Home / 146,128.20-219,041.10-79,427.40

Finding the Fourth Proportional to 146,128.20, 219,041.10 and 79,427.40

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Solution

The fourth proportional to 146,128.20, 219,041.10 and 79,427.40 is: 119,058.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,128.20 : 219,041.10 = 79,427.40 : x
  2. Step 2: Convert to fraction form
    146,128.20/219,041.10 = 79,427.40/x
  3. Step 3: Cross multiply
    146,128.20x = 219,041.10 × 79,427.40
  4. Step 4: Simplify right side
    146,128.20x = 17,397,865,066.14
  5. Step 5: Solve for x
    x = 17,397,865,066.14/146,128.20
  6. Step 6: Final answer
    x = 119,058.92

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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.