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Finding the Fourth Proportional to 114,986.40, 158,679.54 and 64,685.40

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Solution

The fourth proportional to 114,986.40, 158,679.54 and 64,685.40 is: 89,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,986.40 : 158,679.54 = 64,685.40 : x
  2. Step 2: Convert to fraction form
    114,986.40/158,679.54 = 64,685.40/x
  3. Step 3: Cross multiply
    114,986.40x = 158,679.54 × 64,685.40
  4. Step 4: Simplify right side
    114,986.40x = 10,264,249,516.72
  5. Step 5: Solve for x
    x = 10,264,249,516.72/114,986.40
  6. Step 6: Final answer
    x = 89,264.90

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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.