Home / 109,337.20-164,005.80-99,660.40

Finding the Fourth Proportional to 109,337.20, 164,005.80 and 99,660.40

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Solution

The fourth proportional to 109,337.20, 164,005.80 and 99,660.40 is: 149,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,337.20 : 164,005.80 = 99,660.40 : x
  2. Step 2: Convert to fraction form
    109,337.20/164,005.80 = 99,660.40/x
  3. Step 3: Cross multiply
    109,337.20x = 164,005.80 × 99,660.40
  4. Step 4: Simplify right side
    109,337.20x = 16,344,883,630.32
  5. Step 5: Solve for x
    x = 16,344,883,630.32/109,337.20
  6. Step 6: Final answer
    x = 149,490.60

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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.