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Finding the Fourth Proportional to 118,358.44, 163,332.12 and 64,643.67

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Solution

The fourth proportional to 118,358.44, 163,332.12 and 64,643.67 is: 89,206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.44 : 163,332.12 = 64,643.67 : x
  2. Step 2: Convert to fraction form
    118,358.44/163,332.12 = 64,643.67/x
  3. Step 3: Cross multiply
    118,358.44x = 163,332.12 × 64,643.67
  4. Step 4: Simplify right side
    118,358.44x = 10,558,387,257.35
  5. Step 5: Solve for x
    x = 10,558,387,257.35/118,358.44
  6. Step 6: Final answer
    x = 89,206.88

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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.