Home / 114,621.80-171,932.70-72,631.40

Finding the Fourth Proportional to 114,621.80, 171,932.70 and 72,631.40

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Solution

The fourth proportional to 114,621.80, 171,932.70 and 72,631.40 is: 108,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,621.80 : 171,932.70 = 72,631.40 : x
  2. Step 2: Convert to fraction form
    114,621.80/171,932.70 = 72,631.40/x
  3. Step 3: Cross multiply
    114,621.80x = 171,932.70 × 72,631.40
  4. Step 4: Simplify right side
    114,621.80x = 12,487,712,706.78
  5. Step 5: Solve for x
    x = 12,487,712,706.78/114,621.80
  6. Step 6: Final answer
    x = 108,947.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.