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Finding the Fourth Proportional to 123,565.65, 170,531.18 and 69,860.22

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Solution

The fourth proportional to 123,565.65, 170,531.18 and 69,860.22 is: 96,413.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,565.65 : 170,531.18 = 69,860.22 : x
  2. Step 2: Convert to fraction form
    123,565.65/170,531.18 = 69,860.22/x
  3. Step 3: Cross multiply
    123,565.65x = 170,531.18 × 69,860.22
  4. Step 4: Simplify right side
    123,565.65x = 11,913,345,402.36
  5. Step 5: Solve for x
    x = 11,913,345,402.36/123,565.65
  6. Step 6: Final answer
    x = 96,413.08

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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.