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Finding the Fourth Proportional to 90,178, 124,446.80 and 51,944.24

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Solution

The fourth proportional to 90,178, 124,446.80 and 51,944.24 is: 71,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,178 : 124,446.80 = 51,944.24 : x
  2. Step 2: Convert to fraction form
    90,178/124,446.80 = 51,944.24/x
  3. Step 3: Cross multiply
    90,178x = 124,446.80 × 51,944.24
  4. Step 4: Simplify right side
    90,178x = 6,464,294,446.43
  5. Step 5: Solve for x
    x = 6,464,294,446.43/90,178
  6. Step 6: Final answer
    x = 71,683.72

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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.