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Finding the Fourth Proportional to 108,750.80, 163,126.20 and 79,007.60

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Solution

The fourth proportional to 108,750.80, 163,126.20 and 79,007.60 is: 118,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,750.80 : 163,126.20 = 79,007.60 : x
  2. Step 2: Convert to fraction form
    108,750.80/163,126.20 = 79,007.60/x
  3. Step 3: Cross multiply
    108,750.80x = 163,126.20 × 79,007.60
  4. Step 4: Simplify right side
    108,750.80x = 12,888,209,559.12
  5. Step 5: Solve for x
    x = 12,888,209,559.12/108,750.80
  6. Step 6: Final answer
    x = 118,511.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.