Home / 115,300.05-159,068.16-69,961.38

Finding the Fourth Proportional to 115,300.05, 159,068.16 and 69,961.38

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Solution

The fourth proportional to 115,300.05, 159,068.16 and 69,961.38 is: 96,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,300.05 : 159,068.16 = 69,961.38 : x
  2. Step 2: Convert to fraction form
    115,300.05/159,068.16 = 69,961.38/x
  3. Step 3: Cross multiply
    115,300.05x = 159,068.16 × 69,961.38
  4. Step 4: Simplify right side
    115,300.05x = 11,128,627,987.66
  5. Step 5: Solve for x
    x = 11,128,627,987.66/115,300.05
  6. Step 6: Final answer
    x = 96,518.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.