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Finding the Fourth Proportional to 172,574.89, 258,880.04 and 66,048.45

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Solution

The fourth proportional to 172,574.89, 258,880.04 and 66,048.45 is: 99,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,574.89 : 258,880.04 = 66,048.45 : x
  2. Step 2: Convert to fraction form
    172,574.89/258,880.04 = 66,048.45/x
  3. Step 3: Cross multiply
    172,574.89x = 258,880.04 × 66,048.45
  4. Step 4: Simplify right side
    172,574.89x = 17,098,625,377.94
  5. Step 5: Solve for x
    x = 17,098,625,377.94/172,574.89
  6. Step 6: Final answer
    x = 99,079.45

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1.5x scale

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.