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Finding the Fourth Proportional to 158,444.76, 218,653.90 and 86,825.10

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Solution

The fourth proportional to 158,444.76, 218,653.90 and 86,825.10 is: 119,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,444.76 : 218,653.90 = 86,825.10 : x
  2. Step 2: Convert to fraction form
    158,444.76/218,653.90 = 86,825.10/x
  3. Step 3: Cross multiply
    158,444.76x = 218,653.90 × 86,825.10
  4. Step 4: Simplify right side
    158,444.76x = 18,984,646,732.89
  5. Step 5: Solve for x
    x = 18,984,646,732.89/158,444.76
  6. Step 6: Final answer
    x = 119,818.71

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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.