Home / 137,973.81-190,419.59-76,726.07

Finding the Fourth Proportional to 137,973.81, 190,419.59 and 76,726.07

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Solution

The fourth proportional to 137,973.81, 190,419.59 and 76,726.07 is: 105,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,973.81 : 190,419.59 = 76,726.07 : x
  2. Step 2: Convert to fraction form
    137,973.81/190,419.59 = 76,726.07/x
  3. Step 3: Cross multiply
    137,973.81x = 190,419.59 × 76,726.07
  4. Step 4: Simplify right side
    137,973.81x = 14,610,146,745.50
  5. Step 5: Solve for x
    x = 14,610,146,745.50/137,973.81
  6. Step 6: Final answer
    x = 105,890.72

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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.