Home / 109,487.40-150,886.16-79,221.48

Finding the Fourth Proportional to 109,487.40, 150,886.16 and 79,221.48

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Solution

The fourth proportional to 109,487.40, 150,886.16 and 79,221.48 is: 109,176.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,487.40 : 150,886.16 = 79,221.48 : x
  2. Step 2: Convert to fraction form
    109,487.40/150,886.16 = 79,221.48/x
  3. Step 3: Cross multiply
    109,487.40x = 150,886.16 × 79,221.48
  4. Step 4: Simplify right side
    109,487.40x = 11,953,424,906.72
  5. Step 5: Solve for x
    x = 11,953,424,906.72/109,487.40
  6. Step 6: Final answer
    x = 109,176.26

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1.5x scale

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.