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Finding the Fourth Proportional to 125,666.40, 188,499.60 and 111,888.30

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Solution

The fourth proportional to 125,666.40, 188,499.60 and 111,888.30 is: 167,832.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,666.40 : 188,499.60 = 111,888.30 : x
  2. Step 2: Convert to fraction form
    125,666.40/188,499.60 = 111,888.30/x
  3. Step 3: Cross multiply
    125,666.40x = 188,499.60 × 111,888.30
  4. Step 4: Simplify right side
    125,666.40x = 21,090,899,794.68
  5. Step 5: Solve for x
    x = 21,090,899,794.68/125,666.40
  6. Step 6: Final answer
    x = 167,832.45

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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.