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Finding the Fourth Proportional to 108,421.38, 149,608.08 and 60,662.70

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Solution

The fourth proportional to 108,421.38, 149,608.08 and 60,662.70 is: 83,707.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,421.38 : 149,608.08 = 60,662.70 : x
  2. Step 2: Convert to fraction form
    108,421.38/149,608.08 = 60,662.70/x
  3. Step 3: Cross multiply
    108,421.38x = 149,608.08 × 60,662.70
  4. Step 4: Simplify right side
    108,421.38x = 9,075,630,074.62
  5. Step 5: Solve for x
    x = 9,075,630,074.62/108,421.38
  6. Step 6: Final answer
    x = 83,707.01

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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.