Home / 137,719.05-190,055.68-77,294.30

Finding the Fourth Proportional to 137,719.05, 190,055.68 and 77,294.30

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Solution

The fourth proportional to 137,719.05, 190,055.68 and 77,294.30 is: 106,668.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,719.05 : 190,055.68 = 77,294.30 : x
  2. Step 2: Convert to fraction form
    137,719.05/190,055.68 = 77,294.30/x
  3. Step 3: Cross multiply
    137,719.05x = 190,055.68 × 77,294.30
  4. Step 4: Simplify right side
    137,719.05x = 14,690,220,746.62
  5. Step 5: Solve for x
    x = 14,690,220,746.62/137,719.05
  6. Step 6: Final answer
    x = 106,668.04

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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.