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Finding the Fourth Proportional to 137,354.00, 205,661.87 and 87,162.35

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Solution

The fourth proportional to 137,354.00, 205,661.87 and 87,162.35 is: 130,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,354.00 : 205,661.87 = 87,162.35 : x
  2. Step 2: Convert to fraction form
    137,354.00/205,661.87 = 87,162.35/x
  3. Step 3: Cross multiply
    137,354.00x = 205,661.87 × 87,162.35
  4. Step 4: Simplify right side
    137,354.00x = 17,925,970,944.63
  5. Step 5: Solve for x
    x = 17,925,970,944.63/137,354.00
  6. Step 6: Final answer
    x = 130,509.28

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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.