Home / 128,126.69-192,125.51-42,707.30

Finding the Fourth Proportional to 128,126.69, 192,125.51 and 42,707.30

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Solution

The fourth proportional to 128,126.69, 192,125.51 and 42,707.30 is: 64,039.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.69 : 192,125.51 = 42,707.30 : x
  2. Step 2: Convert to fraction form
    128,126.69/192,125.51 = 42,707.30/x
  3. Step 3: Cross multiply
    128,126.69x = 192,125.51 × 42,707.30
  4. Step 4: Simplify right side
    128,126.69x = 8,205,160,619.06
  5. Step 5: Solve for x
    x = 8,205,160,619.06/128,126.69
  6. Step 6: Final answer
    x = 64,039.44

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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.