Home / 145,281.17-217,986.44-74,166.20

Finding the Fourth Proportional to 145,281.17, 217,986.44 and 74,166.20

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Solution

The fourth proportional to 145,281.17, 217,986.44 and 74,166.20 is: 111,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,281.17 : 217,986.44 = 74,166.20 : x
  2. Step 2: Convert to fraction form
    145,281.17/217,986.44 = 74,166.20/x
  3. Step 3: Cross multiply
    145,281.17x = 217,986.44 × 74,166.20
  4. Step 4: Simplify right side
    145,281.17x = 16,167,224,445.56
  5. Step 5: Solve for x
    x = 16,167,224,445.56/145,281.17
  6. Step 6: Final answer
    x = 111,282.32

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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.