Home / 131,420.95-197,131.40-31,581.14

Finding the Fourth Proportional to 131,420.95, 197,131.40 and 31,581.14

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Solution

The fourth proportional to 131,420.95, 197,131.40 and 31,581.14 is: 47,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,420.95 : 197,131.40 = 31,581.14 : x
  2. Step 2: Convert to fraction form
    131,420.95/197,131.40 = 31,581.14/x
  3. Step 3: Cross multiply
    131,420.95x = 197,131.40 × 31,581.14
  4. Step 4: Simplify right side
    131,420.95x = 6,225,634,341.80
  5. Step 5: Solve for x
    x = 6,225,634,341.80/131,420.95
  6. Step 6: Final answer
    x = 47,371.70

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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.