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Finding the Fourth Proportional to 108,816.80, 163,225.20 and 75,639.20

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Solution

The fourth proportional to 108,816.80, 163,225.20 and 75,639.20 is: 113,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,816.80 : 163,225.20 = 75,639.20 : x
  2. Step 2: Convert to fraction form
    108,816.80/163,225.20 = 75,639.20/x
  3. Step 3: Cross multiply
    108,816.80x = 163,225.20 × 75,639.20
  4. Step 4: Simplify right side
    108,816.80x = 12,346,223,547.84
  5. Step 5: Solve for x
    x = 12,346,223,547.84/108,816.80
  6. Step 6: Final answer
    x = 113,458.80

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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.