Home / 84,126.96-126,155.88-31,509.36

Finding the Fourth Proportional to 84,126.96, 126,155.88 and 31,509.36

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Solution

The fourth proportional to 84,126.96, 126,155.88 and 31,509.36 is: 47,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,126.96 : 126,155.88 = 31,509.36 : x
  2. Step 2: Convert to fraction form
    84,126.96/126,155.88 = 31,509.36/x
  3. Step 3: Cross multiply
    84,126.96x = 126,155.88 × 31,509.36
  4. Step 4: Simplify right side
    84,126.96x = 3,975,091,039.04
  5. Step 5: Solve for x
    x = 3,975,091,039.04/84,126.96
  6. Step 6: Final answer
    x = 47,251.10

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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.