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Finding the Fourth Proportional to 90,116.43, 134,977.77 and 45,666.87

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Solution

The fourth proportional to 90,116.43, 134,977.77 and 45,666.87 is: 68,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,116.43 : 134,977.77 = 45,666.87 : x
  2. Step 2: Convert to fraction form
    90,116.43/134,977.77 = 45,666.87/x
  3. Step 3: Cross multiply
    90,116.43x = 134,977.77 × 45,666.87
  4. Step 4: Simplify right side
    90,116.43x = 6,164,012,275.48
  5. Step 5: Solve for x
    x = 6,164,012,275.48/90,116.43
  6. Step 6: Final answer
    x = 68,400.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.