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Finding the Fourth Proportional to 144,632.78, 199,569.47 and 90,879.72

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Solution

The fourth proportional to 144,632.78, 199,569.47 and 90,879.72 is: 125,399.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,632.78 : 199,569.47 = 90,879.72 : x
  2. Step 2: Convert to fraction form
    144,632.78/199,569.47 = 90,879.72/x
  3. Step 3: Cross multiply
    144,632.78x = 199,569.47 × 90,879.72
  4. Step 4: Simplify right side
    144,632.78x = 18,136,817,099.75
  5. Step 5: Solve for x
    x = 18,136,817,099.75/144,632.78
  6. Step 6: Final answer
    x = 125,399.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.