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Finding the Fourth Proportional to 118,486.89, 163,512.99 and 64,770.93

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Solution

The fourth proportional to 118,486.89, 163,512.99 and 64,770.93 is: 89,384.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,486.89 : 163,512.99 = 64,770.93 : x
  2. Step 2: Convert to fraction form
    118,486.89/163,512.99 = 64,770.93/x
  3. Step 3: Cross multiply
    118,486.89x = 163,512.99 × 64,770.93
  4. Step 4: Simplify right side
    118,486.89x = 10,590,888,429.38
  5. Step 5: Solve for x
    x = 10,590,888,429.38/118,486.89
  6. Step 6: Final answer
    x = 89,384.47

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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.