Home / 125,533.20-188,299.80-42,427.20

Finding the Fourth Proportional to 125,533.20, 188,299.80 and 42,427.20

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Solution

The fourth proportional to 125,533.20, 188,299.80 and 42,427.20 is: 63,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,533.20 : 188,299.80 = 42,427.20 : x
  2. Step 2: Convert to fraction form
    125,533.20/188,299.80 = 42,427.20/x
  3. Step 3: Cross multiply
    125,533.20x = 188,299.80 × 42,427.20
  4. Step 4: Simplify right side
    125,533.20x = 7,989,033,274.56
  5. Step 5: Solve for x
    x = 7,989,033,274.56/125,533.20
  6. Step 6: Final answer
    x = 63,640.80

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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.