Home / 155,409.16-214,462.50-87,426.11

Finding the Fourth Proportional to 155,409.16, 214,462.50 and 87,426.11

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Solution

The fourth proportional to 155,409.16, 214,462.50 and 87,426.11 is: 120,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,409.16 : 214,462.50 = 87,426.11 : x
  2. Step 2: Convert to fraction form
    155,409.16/214,462.50 = 87,426.11/x
  3. Step 3: Cross multiply
    155,409.16x = 214,462.50 × 87,426.11
  4. Step 4: Simplify right side
    155,409.16x = 18,749,621,843.95
  5. Step 5: Solve for x
    x = 18,749,621,843.95/155,409.16
  6. Step 6: Final answer
    x = 120,646.83

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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.