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Finding the Fourth Proportional to 118,701.90, 163,808.10 and 64,253.94

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Solution

The fourth proportional to 118,701.90, 163,808.10 and 64,253.94 is: 88,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.90 : 163,808.10 = 64,253.94 : x
  2. Step 2: Convert to fraction form
    118,701.90/163,808.10 = 64,253.94/x
  3. Step 3: Cross multiply
    118,701.90x = 163,808.10 × 64,253.94
  4. Step 4: Simplify right side
    118,701.90x = 10,525,315,828.91
  5. Step 5: Solve for x
    x = 10,525,315,828.91/118,701.90
  6. Step 6: Final answer
    x = 88,670.15

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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.