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Finding the Fourth Proportional to 118,368, 163,347.80 and 64,653.16

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Solution

The fourth proportional to 118,368, 163,347.80 and 64,653.16 is: 89,221.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,368 : 163,347.80 = 64,653.16 : x
  2. Step 2: Convert to fraction form
    118,368/163,347.80 = 64,653.16/x
  3. Step 3: Cross multiply
    118,368x = 163,347.80 × 64,653.16
  4. Step 4: Simplify right side
    118,368x = 10,560,951,449.05
  5. Step 5: Solve for x
    x = 10,560,951,449.05/118,368
  6. Step 6: Final answer
    x = 89,221.34

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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.