Home / 98,210.08-135,541.40-55,189.63

Finding the Fourth Proportional to 98,210.08, 135,541.40 and 55,189.63

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Solution

The fourth proportional to 98,210.08, 135,541.40 and 55,189.63 is: 76,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,210.08 : 135,541.40 = 55,189.63 : x
  2. Step 2: Convert to fraction form
    98,210.08/135,541.40 = 55,189.63/x
  3. Step 3: Cross multiply
    98,210.08x = 135,541.40 × 55,189.63
  4. Step 4: Simplify right side
    98,210.08x = 7,480,479,715.68
  5. Step 5: Solve for x
    x = 7,480,479,715.68/98,210.08
  6. Step 6: Final answer
    x = 76,168.15

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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.