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Finding the Fourth Proportional to 116,781.42, 161,159.58 and 66,483.66

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Solution

The fourth proportional to 116,781.42, 161,159.58 and 66,483.66 is: 91,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,781.42 : 161,159.58 = 66,483.66 : x
  2. Step 2: Convert to fraction form
    116,781.42/161,159.58 = 66,483.66/x
  3. Step 3: Cross multiply
    116,781.42x = 161,159.58 × 66,483.66
  4. Step 4: Simplify right side
    116,781.42x = 10,714,478,722.46
  5. Step 5: Solve for x
    x = 10,714,478,722.46/116,781.42
  6. Step 6: Final answer
    x = 91,748.15

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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.