Home / 131,427.55-181,370-70,998.21

Finding the Fourth Proportional to 131,427.55, 181,370 and 70,998.21

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Solution

The fourth proportional to 131,427.55, 181,370 and 70,998.21 is: 97,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.55 : 181,370 = 70,998.21 : x
  2. Step 2: Convert to fraction form
    131,427.55/181,370 = 70,998.21/x
  3. Step 3: Cross multiply
    131,427.55x = 181,370 × 70,998.21
  4. Step 4: Simplify right side
    131,427.55x = 12,876,945,347.70
  5. Step 5: Solve for x
    x = 12,876,945,347.70/131,427.55
  6. Step 6: Final answer
    x = 97,977.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.