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Finding the Fourth Proportional to 114,988.68, 158,684.30 and 64,687.68

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Solution

The fourth proportional to 114,988.68, 158,684.30 and 64,687.68 is: 89,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,988.68 : 158,684.30 = 64,687.68 : x
  2. Step 2: Convert to fraction form
    114,988.68/158,684.30 = 64,687.68/x
  3. Step 3: Cross multiply
    114,988.68x = 158,684.30 × 64,687.68
  4. Step 4: Simplify right side
    114,988.68x = 10,264,919,219.42
  5. Step 5: Solve for x
    x = 10,264,919,219.42/114,988.68
  6. Step 6: Final answer
    x = 89,268.95

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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.