Home / 123,203.42-170,038.20-74,829.81

Finding the Fourth Proportional to 123,203.42, 170,038.20 and 74,829.81

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Solution

The fourth proportional to 123,203.42, 170,038.20 and 74,829.81 is: 103,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,203.42 : 170,038.20 = 74,829.81 : x
  2. Step 2: Convert to fraction form
    123,203.42/170,038.20 = 74,829.81/x
  3. Step 3: Cross multiply
    123,203.42x = 170,038.20 × 74,829.81
  4. Step 4: Simplify right side
    123,203.42x = 12,723,926,198.74
  5. Step 5: Solve for x
    x = 12,723,926,198.74/123,203.42
  6. Step 6: Final answer
    x = 103,275.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.