Home / 135,529.08-187,061.34-90,208.86

Finding the Fourth Proportional to 135,529.08, 187,061.34 and 90,208.86

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Solution

The fourth proportional to 135,529.08, 187,061.34 and 90,208.86 is: 124,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,529.08 : 187,061.34 = 90,208.86 : x
  2. Step 2: Convert to fraction form
    135,529.08/187,061.34 = 90,208.86/x
  3. Step 3: Cross multiply
    135,529.08x = 187,061.34 × 90,208.86
  4. Step 4: Simplify right side
    135,529.08x = 16,874,590,231.47
  5. Step 5: Solve for x
    x = 16,874,590,231.47/135,529.08
  6. Step 6: Final answer
    x = 124,509.00

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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.