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Finding the Fourth Proportional to 97,807.16, 135,041.10 and 66,020.60

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Solution

The fourth proportional to 97,807.16, 135,041.10 and 66,020.60 is: 91,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,807.16 : 135,041.10 = 66,020.60 : x
  2. Step 2: Convert to fraction form
    97,807.16/135,041.10 = 66,020.60/x
  3. Step 3: Cross multiply
    97,807.16x = 135,041.10 × 66,020.60
  4. Step 4: Simplify right side
    97,807.16x = 8,915,494,446.66
  5. Step 5: Solve for x
    x = 8,915,494,446.66/97,807.16
  6. Step 6: Final answer
    x = 91,153.80

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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.