Home / 158,740.64-219,061.90-87,120.84

Finding the Fourth Proportional to 158,740.64, 219,061.90 and 87,120.84

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Solution

The fourth proportional to 158,740.64, 219,061.90 and 87,120.84 is: 120,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,740.64 : 219,061.90 = 87,120.84 : x
  2. Step 2: Convert to fraction form
    158,740.64/219,061.90 = 87,120.84/x
  3. Step 3: Cross multiply
    158,740.64x = 219,061.90 × 87,120.84
  4. Step 4: Simplify right side
    158,740.64x = 19,084,856,740.00
  5. Step 5: Solve for x
    x = 19,084,856,740.00/158,740.64
  6. Step 6: Final answer
    x = 120,226.66

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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.