Home / 125,905.40-188,858.10-69,918.20

Finding the Fourth Proportional to 125,905.40, 188,858.10 and 69,918.20

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Solution

The fourth proportional to 125,905.40, 188,858.10 and 69,918.20 is: 104,877.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,905.40 : 188,858.10 = 69,918.20 : x
  2. Step 2: Convert to fraction form
    125,905.40/188,858.10 = 69,918.20/x
  3. Step 3: Cross multiply
    125,905.40x = 188,858.10 × 69,918.20
  4. Step 4: Simplify right side
    125,905.40x = 13,204,618,407.42
  5. Step 5: Solve for x
    x = 13,204,618,407.42/125,905.40
  6. Step 6: Final answer
    x = 104,877.30

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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.