Home / 131,427.40-197,141.10-87,104.20

Finding the Fourth Proportional to 131,427.40, 197,141.10 and 87,104.20

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Solution

The fourth proportional to 131,427.40, 197,141.10 and 87,104.20 is: 130,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.40 : 197,141.10 = 87,104.20 : x
  2. Step 2: Convert to fraction form
    131,427.40/197,141.10 = 87,104.20/x
  3. Step 3: Cross multiply
    131,427.40x = 197,141.10 × 87,104.20
  4. Step 4: Simplify right side
    131,427.40x = 17,171,817,802.62
  5. Step 5: Solve for x
    x = 17,171,817,802.62/131,427.40
  6. Step 6: Final answer
    x = 130,656.30

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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.