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Finding the Fourth Proportional to 118,705.41, 163,807.25 and 64,980.14

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Solution

The fourth proportional to 118,705.41, 163,807.25 and 64,980.14 is: 89,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,705.41 : 163,807.25 = 64,980.14 : x
  2. Step 2: Convert to fraction form
    118,705.41/163,807.25 = 64,980.14/x
  3. Step 3: Cross multiply
    118,705.41x = 163,807.25 × 64,980.14
  4. Step 4: Simplify right side
    118,705.41x = 10,644,216,894.08
  5. Step 5: Solve for x
    x = 10,644,216,894.08/118,705.41
  6. Step 6: Final answer
    x = 89,669.18

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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.