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Finding the Fourth Proportional to 161,615.88, 223,029.92 and 90,009.74

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Solution

The fourth proportional to 161,615.88, 223,029.92 and 90,009.74 is: 124,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,615.88 : 223,029.92 = 90,009.74 : x
  2. Step 2: Convert to fraction form
    161,615.88/223,029.92 = 90,009.74/x
  3. Step 3: Cross multiply
    161,615.88x = 223,029.92 × 90,009.74
  4. Step 4: Simplify right side
    161,615.88x = 20,074,865,827.93
  5. Step 5: Solve for x
    x = 20,074,865,827.93/161,615.88
  6. Step 6: Final answer
    x = 124,213.45

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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.