Home / 128,356.36-192,488.46-49,430.92

Finding the Fourth Proportional to 128,356.36, 192,488.46 and 49,430.92

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Solution

The fourth proportional to 128,356.36, 192,488.46 and 49,430.92 is: 74,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,356.36 : 192,488.46 = 49,430.92 : x
  2. Step 2: Convert to fraction form
    128,356.36/192,488.46 = 49,430.92/x
  3. Step 3: Cross multiply
    128,356.36x = 192,488.46 × 49,430.92
  4. Step 4: Simplify right side
    128,356.36x = 9,514,881,667.18
  5. Step 5: Solve for x
    x = 9,514,881,667.18/128,356.36
  6. Step 6: Final answer
    x = 74,128.63

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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.