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Finding the Fourth Proportional to 118,805.86, 163,946.28 and 65,091.16

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Solution

The fourth proportional to 118,805.86, 163,946.28 and 65,091.16 is: 89,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,805.86 : 163,946.28 = 65,091.16 : x
  2. Step 2: Convert to fraction form
    118,805.86/163,946.28 = 65,091.16/x
  3. Step 3: Cross multiply
    118,805.86x = 163,946.28 × 65,091.16
  4. Step 4: Simplify right side
    118,805.86x = 10,671,453,542.88
  5. Step 5: Solve for x
    x = 10,671,453,542.88/118,805.86
  6. Step 6: Final answer
    x = 89,822.62

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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.