Home / 115,065.28-172,639.32-40,196.44

Finding the Fourth Proportional to 115,065.28, 172,639.32 and 40,196.44

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Solution

The fourth proportional to 115,065.28, 172,639.32 and 40,196.44 is: 60,309.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,065.28 : 172,639.32 = 40,196.44 : x
  2. Step 2: Convert to fraction form
    115,065.28/172,639.32 = 40,196.44/x
  3. Step 3: Cross multiply
    115,065.28x = 172,639.32 × 40,196.44
  4. Step 4: Simplify right side
    115,065.28x = 6,939,486,068.02
  5. Step 5: Solve for x
    x = 6,939,486,068.02/115,065.28
  6. Step 6: Final answer
    x = 60,309.12

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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.