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Finding the Fourth Proportional to 118,668.71, 163,756.49 and 64,943.34

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Solution

The fourth proportional to 118,668.71, 163,756.49 and 64,943.34 is: 89,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.71 : 163,756.49 = 64,943.34 : x
  2. Step 2: Convert to fraction form
    118,668.71/163,756.49 = 64,943.34/x
  3. Step 3: Cross multiply
    118,668.71x = 163,756.49 × 64,943.34
  4. Step 4: Simplify right side
    118,668.71x = 10,634,892,468.47
  5. Step 5: Solve for x
    x = 10,634,892,468.47/118,668.71
  6. Step 6: Final answer
    x = 89,618.34

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1.5x scale

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.