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Finding the Fourth Proportional to 117,656.58, 162,389.70 and 69,900.72

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Solution

The fourth proportional to 117,656.58, 162,389.70 and 69,900.72 is: 96,477.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,656.58 : 162,389.70 = 69,900.72 : x
  2. Step 2: Convert to fraction form
    117,656.58/162,389.70 = 69,900.72/x
  3. Step 3: Cross multiply
    117,656.58x = 162,389.70 × 69,900.72
  4. Step 4: Simplify right side
    117,656.58x = 11,351,156,950.58
  5. Step 5: Solve for x
    x = 11,351,156,950.58/117,656.58
  6. Step 6: Final answer
    x = 96,477.03

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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.