Home / 172,619.10-258,928.65-54,326.70

Finding the Fourth Proportional to 172,619.10, 258,928.65 and 54,326.70

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Solution

The fourth proportional to 172,619.10, 258,928.65 and 54,326.70 is: 81,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,619.10 : 258,928.65 = 54,326.70 : x
  2. Step 2: Convert to fraction form
    172,619.10/258,928.65 = 54,326.70/x
  3. Step 3: Cross multiply
    172,619.10x = 258,928.65 × 54,326.70
  4. Step 4: Simplify right side
    172,619.10x = 14,066,739,089.96
  5. Step 5: Solve for x
    x = 14,066,739,089.96/172,619.10
  6. Step 6: Final answer
    x = 81,490.05

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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.