Home / 98,619.87-147,886.07-61,178.43

Finding the Fourth Proportional to 98,619.87, 147,886.07 and 61,178.43

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Solution

The fourth proportional to 98,619.87, 147,886.07 and 61,178.43 is: 91,740.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,619.87 : 147,886.07 = 61,178.43 : x
  2. Step 2: Convert to fraction form
    98,619.87/147,886.07 = 61,178.43/x
  3. Step 3: Cross multiply
    98,619.87x = 147,886.07 × 61,178.43
  4. Step 4: Simplify right side
    98,619.87x = 9,047,437,275.58
  5. Step 5: Solve for x
    x = 9,047,437,275.58/98,619.87
  6. Step 6: Final answer
    x = 91,740.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.