Home / 145,376.20-217,805.10-89,907.40

Finding the Fourth Proportional to 145,376.20, 217,805.10 and 89,907.40

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Solution

The fourth proportional to 145,376.20, 217,805.10 and 89,907.40 is: 134,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,376.20 : 217,805.10 = 89,907.40 : x
  2. Step 2: Convert to fraction form
    145,376.20/217,805.10 = 89,907.40/x
  3. Step 3: Cross multiply
    145,376.20x = 217,805.10 × 89,907.40
  4. Step 4: Simplify right side
    145,376.20x = 19,582,290,247.74
  5. Step 5: Solve for x
    x = 19,582,290,247.74/145,376.20
  6. Step 6: Final answer
    x = 134,700.80

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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.