Home / 137,088.76-205,633.08-77,121.20

Finding the Fourth Proportional to 137,088.76, 205,633.08 and 77,121.20

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Solution

The fourth proportional to 137,088.76, 205,633.08 and 77,121.20 is: 115,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,088.76 : 205,633.08 = 77,121.20 : x
  2. Step 2: Convert to fraction form
    137,088.76/205,633.08 = 77,121.20/x
  3. Step 3: Cross multiply
    137,088.76x = 205,633.08 × 77,121.20
  4. Step 4: Simplify right side
    137,088.76x = 15,858,669,889.30
  5. Step 5: Solve for x
    x = 15,858,669,889.30/137,088.76
  6. Step 6: Final answer
    x = 115,681.77

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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.