Home / 144,964.34-217,509.09-78,451.40

Finding the Fourth Proportional to 144,964.34, 217,509.09 and 78,451.40

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Solution

The fourth proportional to 144,964.34, 217,509.09 and 78,451.40 is: 117,710.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,964.34 : 217,509.09 = 78,451.40 : x
  2. Step 2: Convert to fraction form
    144,964.34/217,509.09 = 78,451.40/x
  3. Step 3: Cross multiply
    144,964.34x = 217,509.09 × 78,451.40
  4. Step 4: Simplify right side
    144,964.34x = 17,063,892,623.23
  5. Step 5: Solve for x
    x = 17,063,892,623.23/144,964.34
  6. Step 6: Final answer
    x = 117,710.97

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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.