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Finding the Fourth Proportional to 172,140.43, 258,210.44 and 59,820.65

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Solution

The fourth proportional to 172,140.43, 258,210.44 and 59,820.65 is: 89,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,140.43 : 258,210.44 = 59,820.65 : x
  2. Step 2: Convert to fraction form
    172,140.43/258,210.44 = 59,820.65/x
  3. Step 3: Cross multiply
    172,140.43x = 258,210.44 × 59,820.65
  4. Step 4: Simplify right side
    172,140.43x = 15,446,316,058.48
  5. Step 5: Solve for x
    x = 15,446,316,058.48/172,140.43
  6. Step 6: Final answer
    x = 89,730.90

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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.