Home / 115,336.63-172,985-52,142.06

Finding the Fourth Proportional to 115,336.63, 172,985 and 52,142.06

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Solution

The fourth proportional to 115,336.63, 172,985 and 52,142.06 is: 78,204.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,336.63 : 172,985 = 52,142.06 : x
  2. Step 2: Convert to fraction form
    115,336.63/172,985 = 52,142.06/x
  3. Step 3: Cross multiply
    115,336.63x = 172,985 × 52,142.06
  4. Step 4: Simplify right side
    115,336.63x = 9,019,794,249.10
  5. Step 5: Solve for x
    x = 9,019,794,249.10/115,336.63
  6. Step 6: Final answer
    x = 78,204.07

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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.