Home / 125,827.10-188,412.60-81,212.30

Finding the Fourth Proportional to 125,827.10, 188,412.60 and 81,212.30

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Solution

The fourth proportional to 125,827.10, 188,412.60 and 81,212.30 is: 121,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,827.10 : 188,412.60 = 81,212.30 : x
  2. Step 2: Convert to fraction form
    125,827.10/188,412.60 = 81,212.30/x
  3. Step 3: Cross multiply
    125,827.10x = 188,412.60 × 81,212.30
  4. Step 4: Simplify right side
    125,827.10x = 15,301,420,594.98
  5. Step 5: Solve for x
    x = 15,301,420,594.98/125,827.10
  6. Step 6: Final answer
    x = 121,606.72

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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.