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Finding the Fourth Proportional to 158,667.23, 218,966.45 and 87,049.32

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Solution

The fourth proportional to 158,667.23, 218,966.45 and 87,049.32 is: 120,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,667.23 : 218,966.45 = 87,049.32 : x
  2. Step 2: Convert to fraction form
    158,667.23/218,966.45 = 87,049.32/x
  3. Step 3: Cross multiply
    158,667.23x = 218,966.45 × 87,049.32
  4. Step 4: Simplify right side
    158,667.23x = 19,060,880,140.07
  5. Step 5: Solve for x
    x = 19,060,880,140.07/158,667.23
  6. Step 6: Final answer
    x = 120,131.17

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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.