Home / 147,146.72-203,056.35-86,719.91

Finding the Fourth Proportional to 147,146.72, 203,056.35 and 86,719.91

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Solution

The fourth proportional to 147,146.72, 203,056.35 and 86,719.91 is: 119,669.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,146.72 : 203,056.35 = 86,719.91 : x
  2. Step 2: Convert to fraction form
    147,146.72/203,056.35 = 86,719.91/x
  3. Step 3: Cross multiply
    147,146.72x = 203,056.35 × 86,719.91
  4. Step 4: Simplify right side
    147,146.72x = 17,609,028,396.93
  5. Step 5: Solve for x
    x = 17,609,028,396.93/147,146.72
  6. Step 6: Final answer
    x = 119,669.87

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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.