Home / 137,807.34-190,171.71-77,378.46

Finding the Fourth Proportional to 137,807.34, 190,171.71 and 77,378.46

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Solution

The fourth proportional to 137,807.34, 190,171.71 and 77,378.46 is: 106,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,807.34 : 190,171.71 = 77,378.46 : x
  2. Step 2: Convert to fraction form
    137,807.34/190,171.71 = 77,378.46/x
  3. Step 3: Cross multiply
    137,807.34x = 190,171.71 × 77,378.46
  4. Step 4: Simplify right side
    137,807.34x = 14,715,194,055.37
  5. Step 5: Solve for x
    x = 14,715,194,055.37/137,807.34
  6. Step 6: Final answer
    x = 106,780.92

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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.