Home / 137,972.44-190,417.70-76,724.69

Finding the Fourth Proportional to 137,972.44, 190,417.70 and 76,724.69

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Solution

The fourth proportional to 137,972.44, 190,417.70 and 76,724.69 is: 105,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,972.44 : 190,417.70 = 76,724.69 : x
  2. Step 2: Convert to fraction form
    137,972.44/190,417.70 = 76,724.69/x
  3. Step 3: Cross multiply
    137,972.44x = 190,417.70 × 76,724.69
  4. Step 4: Simplify right side
    137,972.44x = 14,609,739,003.01
  5. Step 5: Solve for x
    x = 14,609,739,003.01/137,972.44
  6. Step 6: Final answer
    x = 105,888.82

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1.5x scale

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.