Home / 115,199.32-172,822.38-48,639.64

Finding the Fourth Proportional to 115,199.32, 172,822.38 and 48,639.64

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Solution

The fourth proportional to 115,199.32, 172,822.38 and 48,639.64 is: 72,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,199.32 : 172,822.38 = 48,639.64 : x
  2. Step 2: Convert to fraction form
    115,199.32/172,822.38 = 48,639.64/x
  3. Step 3: Cross multiply
    115,199.32x = 172,822.38 × 48,639.64
  4. Step 4: Simplify right side
    115,199.32x = 8,406,018,347.14
  5. Step 5: Solve for x
    x = 8,406,018,347.14/115,199.32
  6. Step 6: Final answer
    x = 72,969.34

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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.