Home / 128,126.50-192,125.23-42,707.12

Finding the Fourth Proportional to 128,126.50, 192,125.23 and 42,707.12

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Solution

The fourth proportional to 128,126.50, 192,125.23 and 42,707.12 is: 64,039.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.50 : 192,125.23 = 42,707.12 : x
  2. Step 2: Convert to fraction form
    128,126.50/192,125.23 = 42,707.12/x
  3. Step 3: Cross multiply
    128,126.50x = 192,125.23 × 42,707.12
  4. Step 4: Simplify right side
    128,126.50x = 8,205,114,185.24
  5. Step 5: Solve for x
    x = 8,205,114,185.24/128,126.50
  6. Step 6: Final answer
    x = 64,039.17

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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.