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Finding the Fourth Proportional to 172,005.60, 258,008.40 and 45,645.60

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Solution

The fourth proportional to 172,005.60, 258,008.40 and 45,645.60 is: 68,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,005.60 : 258,008.40 = 45,645.60 : x
  2. Step 2: Convert to fraction form
    172,005.60/258,008.40 = 45,645.60/x
  3. Step 3: Cross multiply
    172,005.60x = 258,008.40 × 45,645.60
  4. Step 4: Simplify right side
    172,005.60x = 11,776,948,223.04
  5. Step 5: Solve for x
    x = 11,776,948,223.04/172,005.60
  6. Step 6: Final answer
    x = 68,468.40

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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.