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Finding the Fourth Proportional to 131,223.39, 196,866.35 and 42,476.90

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Solution

The fourth proportional to 131,223.39, 196,866.35 and 42,476.90 is: 63,725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,223.39 : 196,866.35 = 42,476.90 : x
  2. Step 2: Convert to fraction form
    131,223.39/196,866.35 = 42,476.90/x
  3. Step 3: Cross multiply
    131,223.39x = 196,866.35 × 42,476.90
  4. Step 4: Simplify right side
    131,223.39x = 8,362,271,065.60
  5. Step 5: Solve for x
    x = 8,362,271,065.60/131,223.39
  6. Step 6: Final answer
    x = 63,725.46

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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.