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Finding the Fourth Proportional to 118,358.76, 163,334.24 and 64,643.80

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Solution

The fourth proportional to 118,358.76, 163,334.24 and 64,643.80 is: 89,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.76 : 163,334.24 = 64,643.80 : x
  2. Step 2: Convert to fraction form
    118,358.76/163,334.24 = 64,643.80/x
  3. Step 3: Cross multiply
    118,358.76x = 163,334.24 × 64,643.80
  4. Step 4: Simplify right side
    118,358.76x = 10,558,545,943.71
  5. Step 5: Solve for x
    x = 10,558,545,943.71/118,358.76
  6. Step 6: Final answer
    x = 89,207.98

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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.