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Finding the Fourth Proportional to 125,477.20, 188,014.20 and 66,235.60

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Solution

The fourth proportional to 125,477.20, 188,014.20 and 66,235.60 is: 99,246.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,477.20 : 188,014.20 = 66,235.60 : x
  2. Step 2: Convert to fraction form
    125,477.20/188,014.20 = 66,235.60/x
  3. Step 3: Cross multiply
    125,477.20x = 188,014.20 × 66,235.60
  4. Step 4: Simplify right side
    125,477.20x = 12,453,233,345.52
  5. Step 5: Solve for x
    x = 12,453,233,345.52/125,477.20
  6. Step 6: Final answer
    x = 99,246.98

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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.