Home / 90,875.66-136,362.69-87,562.35

Finding the Fourth Proportional to 90,875.66, 136,362.69 and 87,562.35

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Solution

The fourth proportional to 90,875.66, 136,362.69 and 87,562.35 is: 131,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.66 : 136,362.69 = 87,562.35 : x
  2. Step 2: Convert to fraction form
    90,875.66/136,362.69 = 87,562.35/x
  3. Step 3: Cross multiply
    90,875.66x = 136,362.69 × 87,562.35
  4. Step 4: Simplify right side
    90,875.66x = 11,940,237,588.72
  5. Step 5: Solve for x
    x = 11,940,237,588.72/90,875.66
  6. Step 6: Final answer
    x = 131,390.94

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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.