Home / 115,349.78-172,941.60-70,884.66

Finding the Fourth Proportional to 115,349.78, 172,941.60 and 70,884.66

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Solution

The fourth proportional to 115,349.78, 172,941.60 and 70,884.66 is: 106,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,349.78 : 172,941.60 = 70,884.66 : x
  2. Step 2: Convert to fraction form
    115,349.78/172,941.60 = 70,884.66/x
  3. Step 3: Cross multiply
    115,349.78x = 172,941.60 × 70,884.66
  4. Step 4: Simplify right side
    115,349.78x = 12,258,906,515.86
  5. Step 5: Solve for x
    x = 12,258,906,515.86/115,349.78
  6. Step 6: Final answer
    x = 106,275.94

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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.