Home / 137,742.26-190,069.71-77,319.55

Finding the Fourth Proportional to 137,742.26, 190,069.71 and 77,319.55

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Solution

The fourth proportional to 137,742.26, 190,069.71 and 77,319.55 is: 106,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,742.26 : 190,069.71 = 77,319.55 : x
  2. Step 2: Convert to fraction form
    137,742.26/190,069.71 = 77,319.55/x
  3. Step 3: Cross multiply
    137,742.26x = 190,069.71 × 77,319.55
  4. Step 4: Simplify right side
    137,742.26x = 14,696,103,108.88
  5. Step 5: Solve for x
    x = 14,696,103,108.88/137,742.26
  6. Step 6: Final answer
    x = 106,692.77

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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.