Home / 207,905.88-286,910.28-112,412.64

Finding the Fourth Proportional to 207,905.88, 286,910.28 and 112,412.64

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Solution

The fourth proportional to 207,905.88, 286,910.28 and 112,412.64 is: 155,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,905.88 : 286,910.28 = 112,412.64 : x
  2. Step 2: Convert to fraction form
    207,905.88/286,910.28 = 112,412.64/x
  3. Step 3: Cross multiply
    207,905.88x = 286,910.28 × 112,412.64
  4. Step 4: Simplify right side
    207,905.88x = 32,252,342,017.94
  5. Step 5: Solve for x
    x = 32,252,342,017.94/207,905.88
  6. Step 6: Final answer
    x = 155,129.53

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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.