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Finding the Fourth Proportional to 98,661.64, 137,071.36 and 97,480.60

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Solution

The fourth proportional to 98,661.64, 137,071.36 and 97,480.60 is: 135,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,661.64 : 137,071.36 = 97,480.60 : x
  2. Step 2: Convert to fraction form
    98,661.64/137,071.36 = 97,480.60/x
  3. Step 3: Cross multiply
    98,661.64x = 137,071.36 × 97,480.60
  4. Step 4: Simplify right side
    98,661.64x = 13,361,798,415.62
  5. Step 5: Solve for x
    x = 13,361,798,415.62/98,661.64
  6. Step 6: Final answer
    x = 135,430.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.