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Finding the Fourth Proportional to 117,878.30, 162,726.88 and 69,465

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Solution

The fourth proportional to 117,878.30, 162,726.88 and 69,465 is: 95,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,878.30 : 162,726.88 = 69,465 : x
  2. Step 2: Convert to fraction form
    117,878.30/162,726.88 = 69,465/x
  3. Step 3: Cross multiply
    117,878.30x = 162,726.88 × 69,465
  4. Step 4: Simplify right side
    117,878.30x = 11,303,822,719.20
  5. Step 5: Solve for x
    x = 11,303,822,719.20/117,878.30
  6. Step 6: Final answer
    x = 95,894.01

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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.