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Finding the Fourth Proportional to 118,494.80, 163,522.80 and 64,779.80

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Solution

The fourth proportional to 118,494.80, 163,522.80 and 64,779.80 is: 89,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,494.80 : 163,522.80 = 64,779.80 : x
  2. Step 2: Convert to fraction form
    118,494.80/163,522.80 = 64,779.80/x
  3. Step 3: Cross multiply
    118,494.80x = 163,522.80 × 64,779.80
  4. Step 4: Simplify right side
    118,494.80x = 10,592,973,461.83
  5. Step 5: Solve for x
    x = 10,592,973,461.83/118,494.80
  6. Step 6: Final answer
    x = 89,396.11

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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.