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Finding the Fourth Proportional to 150,053.57, 207,050.91 and 86,379.06

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Solution

The fourth proportional to 150,053.57, 207,050.91 and 86,379.06 is: 119,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,053.57 : 207,050.91 = 86,379.06 : x
  2. Step 2: Convert to fraction form
    150,053.57/207,050.91 = 86,379.06/x
  3. Step 3: Cross multiply
    150,053.57x = 207,050.91 × 86,379.06
  4. Step 4: Simplify right side
    150,053.57x = 17,884,862,977.94
  5. Step 5: Solve for x
    x = 17,884,862,977.94/150,053.57
  6. Step 6: Final answer
    x = 119,189.85

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1.5x scale

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.