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Finding the Fourth Proportional to 108,937.60, 163,406.40 and 91,441.60

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Solution

The fourth proportional to 108,937.60, 163,406.40 and 91,441.60 is: 137,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,937.60 : 163,406.40 = 91,441.60 : x
  2. Step 2: Convert to fraction form
    108,937.60/163,406.40 = 91,441.60/x
  3. Step 3: Cross multiply
    108,937.60x = 163,406.40 × 91,441.60
  4. Step 4: Simplify right side
    108,937.60x = 14,942,142,666.24
  5. Step 5: Solve for x
    x = 14,942,142,666.24/108,937.60
  6. Step 6: Final answer
    x = 137,162.40

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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.