Home / 105,405.26-158,070.09-30,509.91

Finding the Fourth Proportional to 105,405.26, 158,070.09 and 30,509.91

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Solution

The fourth proportional to 105,405.26, 158,070.09 and 30,509.91 is: 45,753.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,405.26 : 158,070.09 = 30,509.91 : x
  2. Step 2: Convert to fraction form
    105,405.26/158,070.09 = 30,509.91/x
  3. Step 3: Cross multiply
    105,405.26x = 158,070.09 × 30,509.91
  4. Step 4: Simplify right side
    105,405.26x = 4,822,703,276.69
  5. Step 5: Solve for x
    x = 4,822,703,276.69/105,405.26
  6. Step 6: Final answer
    x = 45,753.91

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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.