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Finding the Fourth Proportional to 116,532, 160,814.16 and 66,240.72

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Solution

The fourth proportional to 116,532, 160,814.16 and 66,240.72 is: 91,412.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,532 : 160,814.16 = 66,240.72 : x
  2. Step 2: Convert to fraction form
    116,532/160,814.16 = 66,240.72/x
  3. Step 3: Cross multiply
    116,532x = 160,814.16 × 66,240.72
  4. Step 4: Simplify right side
    116,532x = 10,652,445,744.60
  5. Step 5: Solve for x
    x = 10,652,445,744.60/116,532
  6. Step 6: Final answer
    x = 91,412.19

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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.