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Finding the Fourth Proportional to 117,460, 162,040.98 and 69,686.20

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Solution

The fourth proportional to 117,460, 162,040.98 and 69,686.20 is: 96,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,460 : 162,040.98 = 69,686.20 : x
  2. Step 2: Convert to fraction form
    117,460/162,040.98 = 69,686.20/x
  3. Step 3: Cross multiply
    117,460x = 162,040.98 × 69,686.20
  4. Step 4: Simplify right side
    117,460x = 11,292,020,140.48
  5. Step 5: Solve for x
    x = 11,292,020,140.48/117,460
  6. Step 6: Final answer
    x = 96,135.03

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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.