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Finding the Fourth Proportional to 118,197.78, 163,114.10 and 64,482.96

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Solution

The fourth proportional to 118,197.78, 163,114.10 and 64,482.96 is: 88,987.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,197.78 : 163,114.10 = 64,482.96 : x
  2. Step 2: Convert to fraction form
    118,197.78/163,114.10 = 64,482.96/x
  3. Step 3: Cross multiply
    118,197.78x = 163,114.10 × 64,482.96
  4. Step 4: Simplify right side
    118,197.78x = 10,518,079,985.74
  5. Step 5: Solve for x
    x = 10,518,079,985.74/118,197.78
  6. Step 6: Final answer
    x = 88,987.12

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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.