Home / 172,590.72-258,886.08-54,272.40

Finding the Fourth Proportional to 172,590.72, 258,886.08 and 54,272.40

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Solution

The fourth proportional to 172,590.72, 258,886.08 and 54,272.40 is: 81,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,590.72 : 258,886.08 = 54,272.40 : x
  2. Step 2: Convert to fraction form
    172,590.72/258,886.08 = 54,272.40/x
  3. Step 3: Cross multiply
    172,590.72x = 258,886.08 × 54,272.40
  4. Step 4: Simplify right side
    172,590.72x = 14,050,368,888.19
  5. Step 5: Solve for x
    x = 14,050,368,888.19/172,590.72
  6. Step 6: Final answer
    x = 81,408.60

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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.