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Finding the Fourth Proportional to 158,586.84, 218,854.17 and 90,614.88

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Solution

The fourth proportional to 158,586.84, 218,854.17 and 90,614.88 is: 125,051.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,586.84 : 218,854.17 = 90,614.88 : x
  2. Step 2: Convert to fraction form
    158,586.84/218,854.17 = 90,614.88/x
  3. Step 3: Cross multiply
    158,586.84x = 218,854.17 × 90,614.88
  4. Step 4: Simplify right side
    158,586.84x = 19,831,444,352.05
  5. Step 5: Solve for x
    x = 19,831,444,352.05/158,586.84
  6. Step 6: Final answer
    x = 125,051.01

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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.