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Finding the Fourth Proportional to 161,657.86, 223,094.77 and 90,037.90

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Solution

The fourth proportional to 161,657.86, 223,094.77 and 90,037.90 is: 124,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,657.86 : 223,094.77 = 90,037.90 : x
  2. Step 2: Convert to fraction form
    161,657.86/223,094.77 = 90,037.90/x
  3. Step 3: Cross multiply
    161,657.86x = 223,094.77 × 90,037.90
  4. Step 4: Simplify right side
    161,657.86x = 20,086,984,591.78
  5. Step 5: Solve for x
    x = 20,086,984,591.78/161,657.86
  6. Step 6: Final answer
    x = 124,256.16

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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.