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Finding the Fourth Proportional to 159,756.84, 220,465.19 and 88,136.84

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Solution

The fourth proportional to 159,756.84, 220,465.19 and 88,136.84 is: 121,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,756.84 : 220,465.19 = 88,136.84 : x
  2. Step 2: Convert to fraction form
    159,756.84/220,465.19 = 88,136.84/x
  3. Step 3: Cross multiply
    159,756.84x = 220,465.19 × 88,136.84
  4. Step 4: Simplify right side
    159,756.84x = 19,431,105,287.08
  5. Step 5: Solve for x
    x = 19,431,105,287.08/159,756.84
  6. Step 6: Final answer
    x = 121,629.25

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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.