Home / 137,995.15-190,438.71-77,565.61

Finding the Fourth Proportional to 137,995.15, 190,438.71 and 77,565.61

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Solution

The fourth proportional to 137,995.15, 190,438.71 and 77,565.61 is: 107,043.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,995.15 : 190,438.71 = 77,565.61 : x
  2. Step 2: Convert to fraction form
    137,995.15/190,438.71 = 77,565.61/x
  3. Step 3: Cross multiply
    137,995.15x = 190,438.71 × 77,565.61
  4. Step 4: Simplify right side
    137,995.15x = 14,771,494,708.76
  5. Step 5: Solve for x
    x = 14,771,494,708.76/137,995.15
  6. Step 6: Final answer
    x = 107,043.58

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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.