Home / 100,015.11-137,955.83-64,148.31

Finding the Fourth Proportional to 100,015.11, 137,955.83 and 64,148.31

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Solution

The fourth proportional to 100,015.11, 137,955.83 and 64,148.31 is: 88,482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,015.11 : 137,955.83 = 64,148.31 : x
  2. Step 2: Convert to fraction form
    100,015.11/137,955.83 = 64,148.31/x
  3. Step 3: Cross multiply
    100,015.11x = 137,955.83 × 64,148.31
  4. Step 4: Simplify right side
    100,015.11x = 8,849,633,028.41
  5. Step 5: Solve for x
    x = 8,849,633,028.41/100,015.11
  6. Step 6: Final answer
    x = 88,482.96

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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.