Home / 131,739.60-181,753.40-75,118.16

Finding the Fourth Proportional to 131,739.60, 181,753.40 and 75,118.16

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Solution

The fourth proportional to 131,739.60, 181,753.40 and 75,118.16 is: 103,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,739.60 : 181,753.40 = 75,118.16 : x
  2. Step 2: Convert to fraction form
    131,739.60/181,753.40 = 75,118.16/x
  3. Step 3: Cross multiply
    131,739.60x = 181,753.40 × 75,118.16
  4. Step 4: Simplify right side
    131,739.60x = 13,652,980,981.74
  5. Step 5: Solve for x
    x = 13,652,980,981.74/131,739.60
  6. Step 6: Final answer
    x = 103,636.12

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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.