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Finding the Fourth Proportional to 117,374.40, 162,000 and 77,094.72

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Solution

The fourth proportional to 117,374.40, 162,000 and 77,094.72 is: 106,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,374.40 : 162,000 = 77,094.72 : x
  2. Step 2: Convert to fraction form
    117,374.40/162,000 = 77,094.72/x
  3. Step 3: Cross multiply
    117,374.40x = 162,000 × 77,094.72
  4. Step 4: Simplify right side
    117,374.40x = 12,489,344,640
  5. Step 5: Solve for x
    x = 12,489,344,640/117,374.40
  6. Step 6: Final answer
    x = 106,406.04

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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.