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Finding the Fourth Proportional to 118,200.67, 163,114.05 and 64,486.06

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Solution

The fourth proportional to 118,200.67, 163,114.05 and 64,486.06 is: 88,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,200.67 : 163,114.05 = 64,486.06 : x
  2. Step 2: Convert to fraction form
    118,200.67/163,114.05 = 64,486.06/x
  3. Step 3: Cross multiply
    118,200.67x = 163,114.05 × 64,486.06
  4. Step 4: Simplify right side
    118,200.67x = 10,518,582,415.14
  5. Step 5: Solve for x
    x = 10,518,582,415.14/118,200.67
  6. Step 6: Final answer
    x = 88,989.19

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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.