Home / 145,972.32-201,144.24-100,664.16

Finding the Fourth Proportional to 145,972.32, 201,144.24 and 100,664.16

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Solution

The fourth proportional to 145,972.32, 201,144.24 and 100,664.16 is: 138,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,972.32 : 201,144.24 = 100,664.16 : x
  2. Step 2: Convert to fraction form
    145,972.32/201,144.24 = 100,664.16/x
  3. Step 3: Cross multiply
    145,972.32x = 201,144.24 × 100,664.16
  4. Step 4: Simplify right side
    145,972.32x = 20,248,015,958.44
  5. Step 5: Solve for x
    x = 20,248,015,958.44/145,972.32
  6. Step 6: Final answer
    x = 138,711.34

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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.