Home / 131,476.70-197,215.05-81,710.30

Finding the Fourth Proportional to 131,476.70, 197,215.05 and 81,710.30

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Solution

The fourth proportional to 131,476.70, 197,215.05 and 81,710.30 is: 122,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,476.70 : 197,215.05 = 81,710.30 : x
  2. Step 2: Convert to fraction form
    131,476.70/197,215.05 = 81,710.30/x
  3. Step 3: Cross multiply
    131,476.70x = 197,215.05 × 81,710.30
  4. Step 4: Simplify right side
    131,476.70x = 16,114,500,900.02
  5. Step 5: Solve for x
    x = 16,114,500,900.02/131,476.70
  6. Step 6: Final answer
    x = 122,565.45

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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.