Home / 131,712.48-181,778.40-75,132

Finding the Fourth Proportional to 131,712.48, 181,778.40 and 75,132

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Solution

The fourth proportional to 131,712.48, 181,778.40 and 75,132 is: 103,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,712.48 : 181,778.40 = 75,132 : x
  2. Step 2: Convert to fraction form
    131,712.48/181,778.40 = 75,132/x
  3. Step 3: Cross multiply
    131,712.48x = 181,778.40 × 75,132
  4. Step 4: Simplify right side
    131,712.48x = 13,657,374,748.80
  5. Step 5: Solve for x
    x = 13,657,374,748.80/131,712.48
  6. Step 6: Final answer
    x = 103,690.82

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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.