Home / 144,972.36-217,521.12-78,459.40

Finding the Fourth Proportional to 144,972.36, 217,521.12 and 78,459.40

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Solution

The fourth proportional to 144,972.36, 217,521.12 and 78,459.40 is: 117,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,972.36 : 217,521.12 = 78,459.40 : x
  2. Step 2: Convert to fraction form
    144,972.36/217,521.12 = 78,459.40/x
  3. Step 3: Cross multiply
    144,972.36x = 217,521.12 × 78,459.40
  4. Step 4: Simplify right side
    144,972.36x = 17,066,576,562.53
  5. Step 5: Solve for x
    x = 17,066,576,562.53/144,972.36
  6. Step 6: Final answer
    x = 117,722.97

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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.