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Finding the Fourth Proportional to 119,565.45, 165,018.47 and 90,837.99

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Solution

The fourth proportional to 119,565.45, 165,018.47 and 90,837.99 is: 125,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,565.45 : 165,018.47 = 90,837.99 : x
  2. Step 2: Convert to fraction form
    119,565.45/165,018.47 = 90,837.99/x
  3. Step 3: Cross multiply
    119,565.45x = 165,018.47 × 90,837.99
  4. Step 4: Simplify right side
    119,565.45x = 14,989,945,673.49
  5. Step 5: Solve for x
    x = 14,989,945,673.49/119,565.45
  6. Step 6: Final answer
    x = 125,370.21

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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.