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Finding the Fourth Proportional to 145,197, 217,591.20 and 115,482.96

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Solution

The fourth proportional to 145,197, 217,591.20 and 115,482.96 is: 173,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,197 : 217,591.20 = 115,482.96 : x
  2. Step 2: Convert to fraction form
    145,197/217,591.20 = 115,482.96/x
  3. Step 3: Cross multiply
    145,197x = 217,591.20 × 115,482.96
  4. Step 4: Simplify right side
    145,197x = 25,128,075,845.95
  5. Step 5: Solve for x
    x = 25,128,075,845.95/145,197
  6. Step 6: Final answer
    x = 173,061.95

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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.