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Finding the Fourth Proportional to 117,787.01, 162,599.15 and 77,521.91

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Solution

The fourth proportional to 117,787.01, 162,599.15 and 77,521.91 is: 107,015.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,787.01 : 162,599.15 = 77,521.91 : x
  2. Step 2: Convert to fraction form
    117,787.01/162,599.15 = 77,521.91/x
  3. Step 3: Cross multiply
    117,787.01x = 162,599.15 × 77,521.91
  4. Step 4: Simplify right side
    117,787.01x = 12,604,996,284.77
  5. Step 5: Solve for x
    x = 12,604,996,284.77/117,787.01
  6. Step 6: Final answer
    x = 107,015.16

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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.