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Finding the Fourth Proportional to 108,235.50, 149,312.88 and 67,929.36

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Solution

The fourth proportional to 108,235.50, 149,312.88 and 67,929.36 is: 93,709.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,235.50 : 149,312.88 = 67,929.36 : x
  2. Step 2: Convert to fraction form
    108,235.50/149,312.88 = 67,929.36/x
  3. Step 3: Cross multiply
    108,235.50x = 149,312.88 × 67,929.36
  4. Step 4: Simplify right side
    108,235.50x = 10,142,728,378.16
  5. Step 5: Solve for x
    x = 10,142,728,378.16/108,235.50
  6. Step 6: Final answer
    x = 93,709.81

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1.5x scale

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.