Home / 137,715.12-190,035.72-77,277.36

Finding the Fourth Proportional to 137,715.12, 190,035.72 and 77,277.36

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Solution

The fourth proportional to 137,715.12, 190,035.72 and 77,277.36 is: 106,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,715.12 : 190,035.72 = 77,277.36 : x
  2. Step 2: Convert to fraction form
    137,715.12/190,035.72 = 77,277.36/x
  3. Step 3: Cross multiply
    137,715.12x = 190,035.72 × 77,277.36
  4. Step 4: Simplify right side
    137,715.12x = 14,685,458,747.30
  5. Step 5: Solve for x
    x = 14,685,458,747.30/137,715.12
  6. Step 6: Final answer
    x = 106,636.50

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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.