Home / 145,287.53-217,525.28-78,488.35

Finding the Fourth Proportional to 145,287.53, 217,525.28 and 78,488.35

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Solution

The fourth proportional to 145,287.53, 217,525.28 and 78,488.35 is: 117,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,287.53 : 217,525.28 = 78,488.35 : x
  2. Step 2: Convert to fraction form
    145,287.53/217,525.28 = 78,488.35/x
  3. Step 3: Cross multiply
    145,287.53x = 217,525.28 × 78,488.35
  4. Step 4: Simplify right side
    145,287.53x = 17,073,200,310.49
  5. Step 5: Solve for x
    x = 17,073,200,310.49/145,287.53
  6. Step 6: Final answer
    x = 117,513.18

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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.