Home / 137,723.52-190,042.80-77,281.68

Finding the Fourth Proportional to 137,723.52, 190,042.80 and 77,281.68

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Solution

The fourth proportional to 137,723.52, 190,042.80 and 77,281.68 is: 106,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,723.52 : 190,042.80 = 77,281.68 : x
  2. Step 2: Convert to fraction form
    137,723.52/190,042.80 = 77,281.68/x
  3. Step 3: Cross multiply
    137,723.52x = 190,042.80 × 77,281.68
  4. Step 4: Simplify right side
    137,723.52x = 14,686,826,855.90
  5. Step 5: Solve for x
    x = 14,686,826,855.90/137,723.52
  6. Step 6: Final answer
    x = 106,639.93

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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.