Home / 131,749.44-181,813.56-71,320.20

Finding the Fourth Proportional to 131,749.44, 181,813.56 and 71,320.20

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Solution

The fourth proportional to 131,749.44, 181,813.56 and 71,320.20 is: 98,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,749.44 : 181,813.56 = 71,320.20 : x
  2. Step 2: Convert to fraction form
    131,749.44/181,813.56 = 71,320.20/x
  3. Step 3: Cross multiply
    131,749.44x = 181,813.56 × 71,320.20
  4. Step 4: Simplify right side
    131,749.44x = 12,966,979,461.91
  5. Step 5: Solve for x
    x = 12,966,979,461.91/131,749.44
  6. Step 6: Final answer
    x = 98,421.51

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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.