Home / 131,690.20-181,731.20-71,259.52

Finding the Fourth Proportional to 131,690.20, 181,731.20 and 71,259.52

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Solution

The fourth proportional to 131,690.20, 181,731.20 and 71,259.52 is: 98,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,690.20 : 181,731.20 = 71,259.52 : x
  2. Step 2: Convert to fraction form
    131,690.20/181,731.20 = 71,259.52/x
  3. Step 3: Cross multiply
    131,690.20x = 181,731.20 × 71,259.52
  4. Step 4: Simplify right side
    131,690.20x = 12,950,078,081.02
  5. Step 5: Solve for x
    x = 12,950,078,081.02/131,690.20
  6. Step 6: Final answer
    x = 98,337.45

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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.