Home / 145,742.20-218,613.30-52,257.40

Finding the Fourth Proportional to 145,742.20, 218,613.30 and 52,257.40

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Solution

The fourth proportional to 145,742.20, 218,613.30 and 52,257.40 is: 78,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.20 : 218,613.30 = 52,257.40 : x
  2. Step 2: Convert to fraction form
    145,742.20/218,613.30 = 52,257.40/x
  3. Step 3: Cross multiply
    145,742.20x = 218,613.30 × 52,257.40
  4. Step 4: Simplify right side
    145,742.20x = 11,424,162,663.42
  5. Step 5: Solve for x
    x = 11,424,162,663.42/145,742.20
  6. Step 6: Final answer
    x = 78,386.10

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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.