Home / 86,940.07-131,080.56-86,400.32

Finding the Fourth Proportional to 86,940.07, 131,080.56 and 86,400.32

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Solution

The fourth proportional to 86,940.07, 131,080.56 and 86,400.32 is: 130,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,940.07 : 131,080.56 = 86,400.32 : x
  2. Step 2: Convert to fraction form
    86,940.07/131,080.56 = 86,400.32/x
  3. Step 3: Cross multiply
    86,940.07x = 131,080.56 × 86,400.32
  4. Step 4: Simplify right side
    86,940.07x = 11,325,402,981.48
  5. Step 5: Solve for x
    x = 11,325,402,981.48/86,940.07
  6. Step 6: Final answer
    x = 130,266.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.