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Finding the Fourth Proportional to 118,703.49, 163,810.98 and 64,988.88

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Solution

The fourth proportional to 118,703.49, 163,810.98 and 64,988.88 is: 89,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,703.49 : 163,810.98 = 64,988.88 : x
  2. Step 2: Convert to fraction form
    118,703.49/163,810.98 = 64,988.88/x
  3. Step 3: Cross multiply
    118,703.49x = 163,810.98 × 64,988.88
  4. Step 4: Simplify right side
    118,703.49x = 10,645,892,121.90
  5. Step 5: Solve for x
    x = 10,645,892,121.90/118,703.49
  6. Step 6: Final answer
    x = 89,684.74

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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.