Home / 115,000.16-172,474.28-31,900.64

Finding the Fourth Proportional to 115,000.16, 172,474.28 and 31,900.64

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Solution

The fourth proportional to 115,000.16, 172,474.28 and 31,900.64 is: 47,843.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,000.16 : 172,474.28 = 31,900.64 : x
  2. Step 2: Convert to fraction form
    115,000.16/172,474.28 = 31,900.64/x
  3. Step 3: Cross multiply
    115,000.16x = 172,474.28 × 31,900.64
  4. Step 4: Simplify right side
    115,000.16x = 5,502,039,915.54
  5. Step 5: Solve for x
    x = 5,502,039,915.54/115,000.16
  6. Step 6: Final answer
    x = 47,843.76

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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.