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Finding the Fourth Proportional to 90,073.89, 135,130.13 and 26,898.99

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Solution

The fourth proportional to 90,073.89, 135,130.13 and 26,898.99 is: 40,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,073.89 : 135,130.13 = 26,898.99 : x
  2. Step 2: Convert to fraction form
    90,073.89/135,130.13 = 26,898.99/x
  3. Step 3: Cross multiply
    90,073.89x = 135,130.13 × 26,898.99
  4. Step 4: Simplify right side
    90,073.89x = 3,634,864,015.57
  5. Step 5: Solve for x
    x = 3,634,864,015.57/90,073.89
  6. Step 6: Final answer
    x = 40,354.25

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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.