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Finding the Fourth Proportional to 158,263.79, 218,402.97 and 86,645.01

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Solution

The fourth proportional to 158,263.79, 218,402.97 and 86,645.01 is: 119,569.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,263.79 : 218,402.97 = 86,645.01 : x
  2. Step 2: Convert to fraction form
    158,263.79/218,402.97 = 86,645.01/x
  3. Step 3: Cross multiply
    158,263.79x = 218,402.97 × 86,645.01
  4. Step 4: Simplify right side
    158,263.79x = 18,923,527,519.68
  5. Step 5: Solve for x
    x = 18,923,527,519.68/158,263.79
  6. Step 6: Final answer
    x = 119,569.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.