Home / 287,404.04-431,106.14-87,725.56

Finding the Fourth Proportional to 287,404.04, 431,106.14 and 87,725.56

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Solution

The fourth proportional to 287,404.04, 431,106.14 and 87,725.56 is: 131,588.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,404.04 : 431,106.14 = 87,725.56 : x
  2. Step 2: Convert to fraction form
    287,404.04/431,106.14 = 87,725.56/x
  3. Step 3: Cross multiply
    287,404.04x = 431,106.14 × 87,725.56
  4. Step 4: Simplify right side
    287,404.04x = 37,819,027,550.94
  5. Step 5: Solve for x
    x = 37,819,027,550.94/287,404.04
  6. Step 6: Final answer
    x = 131,588.36

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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.