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Finding the Fourth Proportional to 90,170.64, 124,367.94 and 79,973.64

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Solution

The fourth proportional to 90,170.64, 124,367.94 and 79,973.64 is: 110,303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,170.64 : 124,367.94 = 79,973.64 : x
  2. Step 2: Convert to fraction form
    90,170.64/124,367.94 = 79,973.64/x
  3. Step 3: Cross multiply
    90,170.64x = 124,367.94 × 79,973.64
  4. Step 4: Simplify right side
    90,170.64x = 9,946,156,861.10
  5. Step 5: Solve for x
    x = 9,946,156,861.10/90,170.64
  6. Step 6: Final answer
    x = 110,303.72

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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.