Home / 117,640.08-162,184.32-79,848.72

Finding the Fourth Proportional to 117,640.08, 162,184.32 and 79,848.72

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Solution

The fourth proportional to 117,640.08, 162,184.32 and 79,848.72 is: 110,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,640.08 : 162,184.32 = 79,848.72 : x
  2. Step 2: Convert to fraction form
    117,640.08/162,184.32 = 79,848.72/x
  3. Step 3: Cross multiply
    117,640.08x = 162,184.32 × 79,848.72
  4. Step 4: Simplify right side
    117,640.08x = 12,950,210,356.07
  5. Step 5: Solve for x
    x = 12,950,210,356.07/117,640.08
  6. Step 6: Final answer
    x = 110,083.32

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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.