Home / 86,272.40-119,120.78-84,894.60

Finding the Fourth Proportional to 86,272.40, 119,120.78 and 84,894.60

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Solution

The fourth proportional to 86,272.40, 119,120.78 and 84,894.60 is: 117,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,272.40 : 119,120.78 = 84,894.60 : x
  2. Step 2: Convert to fraction form
    86,272.40/119,120.78 = 84,894.60/x
  3. Step 3: Cross multiply
    86,272.40x = 119,120.78 × 84,894.60
  4. Step 4: Simplify right side
    86,272.40x = 10,112,710,969.79
  5. Step 5: Solve for x
    x = 10,112,710,969.79/86,272.40
  6. Step 6: Final answer
    x = 117,218.38

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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.