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Finding the Fourth Proportional to 98,597.80, 148,028.05 and 66,684.05

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Solution

The fourth proportional to 98,597.80, 148,028.05 and 66,684.05 is: 100,114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,597.80 : 148,028.05 = 66,684.05 : x
  2. Step 2: Convert to fraction form
    98,597.80/148,028.05 = 66,684.05/x
  3. Step 3: Cross multiply
    98,597.80x = 148,028.05 × 66,684.05
  4. Step 4: Simplify right side
    98,597.80x = 9,871,110,090.96
  5. Step 5: Solve for x
    x = 9,871,110,090.96/98,597.80
  6. Step 6: Final answer
    x = 100,114.91

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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.