Home / 98,111.20-147,166.80-66,618.40

Finding the Fourth Proportional to 98,111.20, 147,166.80 and 66,618.40

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Solution

The fourth proportional to 98,111.20, 147,166.80 and 66,618.40 is: 99,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,111.20 : 147,166.80 = 66,618.40 : x
  2. Step 2: Convert to fraction form
    98,111.20/147,166.80 = 66,618.40/x
  3. Step 3: Cross multiply
    98,111.20x = 147,166.80 × 66,618.40
  4. Step 4: Simplify right side
    98,111.20x = 9,804,016,749.12
  5. Step 5: Solve for x
    x = 9,804,016,749.12/98,111.20
  6. Step 6: Final answer
    x = 99,927.60

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1.5x scale

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.