Home / 145,742.31-218,613.51-112,510.89

Finding the Fourth Proportional to 145,742.31, 218,613.51 and 112,510.89

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Solution

The fourth proportional to 145,742.31, 218,613.51 and 112,510.89 is: 168,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.31 : 218,613.51 = 112,510.89 : x
  2. Step 2: Convert to fraction form
    145,742.31/218,613.51 = 112,510.89/x
  3. Step 3: Cross multiply
    145,742.31x = 218,613.51 × 112,510.89
  4. Step 4: Simplify right side
    145,742.31x = 24,596,400,576.12
  5. Step 5: Solve for x
    x = 24,596,400,576.12/145,742.31
  6. Step 6: Final answer
    x = 168,766.37

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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.