Home / 172,216.40-258,362.10-72,319.64

Finding the Fourth Proportional to 172,216.40, 258,362.10 and 72,319.64

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Solution

The fourth proportional to 172,216.40, 258,362.10 and 72,319.64 is: 108,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,216.40 : 258,362.10 = 72,319.64 : x
  2. Step 2: Convert to fraction form
    172,216.40/258,362.10 = 72,319.64/x
  3. Step 3: Cross multiply
    172,216.40x = 258,362.10 × 72,319.64
  4. Step 4: Simplify right side
    172,216.40x = 18,684,654,061.64
  5. Step 5: Solve for x
    x = 18,684,654,061.64/172,216.40
  6. Step 6: Final answer
    x = 108,495.21

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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.