Home / 98,619.40-136,095.72-91,085.20

Finding the Fourth Proportional to 98,619.40, 136,095.72 and 91,085.20

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Solution

The fourth proportional to 98,619.40, 136,095.72 and 91,085.20 is: 125,698.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,619.40 : 136,095.72 = 91,085.20 : x
  2. Step 2: Convert to fraction form
    98,619.40/136,095.72 = 91,085.20/x
  3. Step 3: Cross multiply
    98,619.40x = 136,095.72 × 91,085.20
  4. Step 4: Simplify right side
    98,619.40x = 12,396,305,875.34
  5. Step 5: Solve for x
    x = 12,396,305,875.34/98,619.40
  6. Step 6: Final answer
    x = 125,698.45

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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.