Home / 128,208.08-192,145.65-52,217.98

Finding the Fourth Proportional to 128,208.08, 192,145.65 and 52,217.98

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Solution

The fourth proportional to 128,208.08, 192,145.65 and 52,217.98 is: 78,259.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,208.08 : 192,145.65 = 52,217.98 : x
  2. Step 2: Convert to fraction form
    128,208.08/192,145.65 = 52,217.98/x
  3. Step 3: Cross multiply
    128,208.08x = 192,145.65 × 52,217.98
  4. Step 4: Simplify right side
    128,208.08x = 10,033,457,228.42
  5. Step 5: Solve for x
    x = 10,033,457,228.42/128,208.08
  6. Step 6: Final answer
    x = 78,259.17

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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.