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Finding the Fourth Proportional to 158,364.96, 218,543.67 and 86,747.55

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Solution

The fourth proportional to 158,364.96, 218,543.67 and 86,747.55 is: 119,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,364.96 : 218,543.67 = 86,747.55 : x
  2. Step 2: Convert to fraction form
    158,364.96/218,543.67 = 86,747.55/x
  3. Step 3: Cross multiply
    158,364.96x = 218,543.67 × 86,747.55
  4. Step 4: Simplify right side
    158,364.96x = 18,958,127,940.51
  5. Step 5: Solve for x
    x = 18,958,127,940.51/158,364.96
  6. Step 6: Final answer
    x = 119,711.63

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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.