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Finding the Fourth Proportional to 161,745.68, 223,215.90 and 90,125.76

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Solution

The fourth proportional to 161,745.68, 223,215.90 and 90,125.76 is: 124,377.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,745.68 : 223,215.90 = 90,125.76 : x
  2. Step 2: Convert to fraction form
    161,745.68/223,215.90 = 90,125.76/x
  3. Step 3: Cross multiply
    161,745.68x = 223,215.90 × 90,125.76
  4. Step 4: Simplify right side
    161,745.68x = 20,117,502,631.58
  5. Step 5: Solve for x
    x = 20,117,502,631.58/161,745.68
  6. Step 6: Final answer
    x = 124,377.37

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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.