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Finding the Fourth Proportional to 90,868.64, 136,301.74 and 23,400.30

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Solution

The fourth proportional to 90,868.64, 136,301.74 and 23,400.30 is: 35,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,868.64 : 136,301.74 = 23,400.30 : x
  2. Step 2: Convert to fraction form
    90,868.64/136,301.74 = 23,400.30/x
  3. Step 3: Cross multiply
    90,868.64x = 136,301.74 × 23,400.30
  4. Step 4: Simplify right side
    90,868.64x = 3,189,501,606.52
  5. Step 5: Solve for x
    x = 3,189,501,606.52/90,868.64
  6. Step 6: Final answer
    x = 35,100.14

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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.