Home / 90,667.16-136,023.80-53,258.86

Finding the Fourth Proportional to 90,667.16, 136,023.80 and 53,258.86

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Solution

The fourth proportional to 90,667.16, 136,023.80 and 53,258.86 is: 79,901.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,667.16 : 136,023.80 = 53,258.86 : x
  2. Step 2: Convert to fraction form
    90,667.16/136,023.80 = 53,258.86/x
  3. Step 3: Cross multiply
    90,667.16x = 136,023.80 × 53,258.86
  4. Step 4: Simplify right side
    90,667.16x = 7,244,472,520.87
  5. Step 5: Solve for x
    x = 7,244,472,520.87/90,667.16
  6. Step 6: Final answer
    x = 79,901.84

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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.