Home / 123,327.08-170,173.13-72,320.57

Finding the Fourth Proportional to 123,327.08, 170,173.13 and 72,320.57

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Solution

The fourth proportional to 123,327.08, 170,173.13 and 72,320.57 is: 99,791.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,327.08 : 170,173.13 = 72,320.57 : x
  2. Step 2: Convert to fraction form
    123,327.08/170,173.13 = 72,320.57/x
  3. Step 3: Cross multiply
    123,327.08x = 170,173.13 × 72,320.57
  4. Step 4: Simplify right side
    123,327.08x = 12,307,016,547.82
  5. Step 5: Solve for x
    x = 12,307,016,547.82/123,327.08
  6. Step 6: Final answer
    x = 99,791.68

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1.5x scale

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.