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Finding the Fourth Proportional to 90,335.79, 134,859.21 and 84,332.46

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Solution

The fourth proportional to 90,335.79, 134,859.21 and 84,332.46 is: 125,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,335.79 : 134,859.21 = 84,332.46 : x
  2. Step 2: Convert to fraction form
    90,335.79/134,859.21 = 84,332.46/x
  3. Step 3: Cross multiply
    90,335.79x = 134,859.21 × 84,332.46
  4. Step 4: Simplify right side
    90,335.79x = 11,373,008,469.49
  5. Step 5: Solve for x
    x = 11,373,008,469.49/90,335.79
  6. Step 6: Final answer
    x = 125,897.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.