Home / 137,787.81-190,140.96-77,357.35

Finding the Fourth Proportional to 137,787.81, 190,140.96 and 77,357.35

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Solution

The fourth proportional to 137,787.81, 190,140.96 and 77,357.35 is: 106,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,787.81 : 190,140.96 = 77,357.35 : x
  2. Step 2: Convert to fraction form
    137,787.81/190,140.96 = 77,357.35/x
  3. Step 3: Cross multiply
    137,787.81x = 190,140.96 × 77,357.35
  4. Step 4: Simplify right side
    137,787.81x = 14,708,800,792.06
  5. Step 5: Solve for x
    x = 14,708,800,792.06/137,787.81
  6. Step 6: Final answer
    x = 106,749.65

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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.