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Finding the Fourth Proportional to 109,639.80, 164,459.70 and 59,700.60

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Solution

The fourth proportional to 109,639.80, 164,459.70 and 59,700.60 is: 89,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.80 : 164,459.70 = 59,700.60 : x
  2. Step 2: Convert to fraction form
    109,639.80/164,459.70 = 59,700.60/x
  3. Step 3: Cross multiply
    109,639.80x = 164,459.70 × 59,700.60
  4. Step 4: Simplify right side
    109,639.80x = 9,818,342,765.82
  5. Step 5: Solve for x
    x = 9,818,342,765.82/109,639.80
  6. Step 6: Final answer
    x = 89,550.90

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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.