Home / 137,807.28-190,126.44-77,369.52

Finding the Fourth Proportional to 137,807.28, 190,126.44 and 77,369.52

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Solution

The fourth proportional to 137,807.28, 190,126.44 and 77,369.52 is: 106,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,807.28 : 190,126.44 = 77,369.52 : x
  2. Step 2: Convert to fraction form
    137,807.28/190,126.44 = 77,369.52/x
  3. Step 3: Cross multiply
    137,807.28x = 190,126.44 × 77,369.52
  4. Step 4: Simplify right side
    137,807.28x = 14,709,991,402.11
  5. Step 5: Solve for x
    x = 14,709,991,402.11/137,807.28
  6. Step 6: Final answer
    x = 106,743.21

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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.