Home / 155,165.18-214,152.27-91,509.98

Finding the Fourth Proportional to 155,165.18, 214,152.27 and 91,509.98

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Solution

The fourth proportional to 155,165.18, 214,152.27 and 91,509.98 is: 126,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,165.18 : 214,152.27 = 91,509.98 : x
  2. Step 2: Convert to fraction form
    155,165.18/214,152.27 = 91,509.98/x
  3. Step 3: Cross multiply
    155,165.18x = 214,152.27 × 91,509.98
  4. Step 4: Simplify right side
    155,165.18x = 19,597,069,944.65
  5. Step 5: Solve for x
    x = 19,597,069,944.65/155,165.18
  6. Step 6: Final answer
    x = 126,298.12

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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.