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Finding the Fourth Proportional to 158,503.65, 218,740.64 and 86,883.65

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Solution

The fourth proportional to 158,503.65, 218,740.64 and 86,883.65 is: 119,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,503.65 : 218,740.64 = 86,883.65 : x
  2. Step 2: Convert to fraction form
    158,503.65/218,740.64 = 86,883.65/x
  3. Step 3: Cross multiply
    158,503.65x = 218,740.64 × 86,883.65
  4. Step 4: Simplify right side
    158,503.65x = 19,004,985,206.54
  5. Step 5: Solve for x
    x = 19,004,985,206.54/158,503.65
  6. Step 6: Final answer
    x = 119,902.51

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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.