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Finding the Fourth Proportional to 131,745.48, 197,649.71 and 42,999.15

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Solution

The fourth proportional to 131,745.48, 197,649.71 and 42,999.15 is: 64,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,745.48 : 197,649.71 = 42,999.15 : x
  2. Step 2: Convert to fraction form
    131,745.48/197,649.71 = 42,999.15/x
  3. Step 3: Cross multiply
    131,745.48x = 197,649.71 × 42,999.15
  4. Step 4: Simplify right side
    131,745.48x = 8,498,769,527.75
  5. Step 5: Solve for x
    x = 8,498,769,527.75/131,745.48
  6. Step 6: Final answer
    x = 64,509.00

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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.