Home / 145,845.87-201,190.46-100,445.19

Finding the Fourth Proportional to 145,845.87, 201,190.46 and 100,445.19

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Solution

The fourth proportional to 145,845.87, 201,190.46 and 100,445.19 is: 138,561.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,845.87 : 201,190.46 = 100,445.19 : x
  2. Step 2: Convert to fraction form
    145,845.87/201,190.46 = 100,445.19/x
  3. Step 3: Cross multiply
    145,845.87x = 201,190.46 × 100,445.19
  4. Step 4: Simplify right side
    145,845.87x = 20,208,613,478.66
  5. Step 5: Solve for x
    x = 20,208,613,478.66/145,845.87
  6. Step 6: Final answer
    x = 138,561.44

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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.