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Finding the Fourth Proportional to 172,487.69, 258,713.33 and 46,140.68

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Solution

The fourth proportional to 172,487.69, 258,713.33 and 46,140.68 is: 69,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,487.69 : 258,713.33 = 46,140.68 : x
  2. Step 2: Convert to fraction form
    172,487.69/258,713.33 = 46,140.68/x
  3. Step 3: Cross multiply
    172,487.69x = 258,713.33 × 46,140.68
  4. Step 4: Simplify right side
    172,487.69x = 11,937,208,740.56
  5. Step 5: Solve for x
    x = 11,937,208,740.56/172,487.69
  6. Step 6: Final answer
    x = 69,206.15

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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.