Home / 115,155.30-172,783.14-40,329.12

Finding the Fourth Proportional to 115,155.30, 172,783.14 and 40,329.12

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Solution

The fourth proportional to 115,155.30, 172,783.14 and 40,329.12 is: 60,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,155.30 : 172,783.14 = 40,329.12 : x
  2. Step 2: Convert to fraction form
    115,155.30/172,783.14 = 40,329.12/x
  3. Step 3: Cross multiply
    115,155.30x = 172,783.14 × 40,329.12
  4. Step 4: Simplify right side
    115,155.30x = 6,968,191,987.04
  5. Step 5: Solve for x
    x = 6,968,191,987.04/115,155.30
  6. Step 6: Final answer
    x = 60,511.26

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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.