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Finding the Fourth Proportional to 118,898.70, 164,101.02 and 90,313

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Solution

The fourth proportional to 118,898.70, 164,101.02 and 90,313 is: 124,647.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,898.70 : 164,101.02 = 90,313 : x
  2. Step 2: Convert to fraction form
    118,898.70/164,101.02 = 90,313/x
  3. Step 3: Cross multiply
    118,898.70x = 164,101.02 × 90,313
  4. Step 4: Simplify right side
    118,898.70x = 14,820,455,419.26
  5. Step 5: Solve for x
    x = 14,820,455,419.26/118,898.70
  6. Step 6: Final answer
    x = 124,647.75

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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.