Home / 287,674.12-431,441.86-87,996.23

Finding the Fourth Proportional to 287,674.12, 431,441.86 and 87,996.23

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Solution

The fourth proportional to 287,674.12, 431,441.86 and 87,996.23 is: 131,973.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,674.12 : 431,441.86 = 87,996.23 : x
  2. Step 2: Convert to fraction form
    287,674.12/431,441.86 = 87,996.23/x
  3. Step 3: Cross multiply
    287,674.12x = 431,441.86 × 87,996.23
  4. Step 4: Simplify right side
    287,674.12x = 37,965,257,144.19
  5. Step 5: Solve for x
    x = 37,965,257,144.19/287,674.12
  6. Step 6: Final answer
    x = 131,973.14

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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.