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Finding the Fourth Proportional to 158,661.86, 218,956.29 and 87,037.52

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Solution

The fourth proportional to 158,661.86, 218,956.29 and 87,037.52 is: 120,113.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,661.86 : 218,956.29 = 87,037.52 : x
  2. Step 2: Convert to fraction form
    158,661.86/218,956.29 = 87,037.52/x
  3. Step 3: Cross multiply
    158,661.86x = 218,956.29 × 87,037.52
  4. Step 4: Simplify right side
    158,661.86x = 19,057,412,470.00
  5. Step 5: Solve for x
    x = 19,057,412,470.00/158,661.86
  6. Step 6: Final answer
    x = 120,113.38

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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.