Home / 145,968.32-201,138.72-100,660.16

Finding the Fourth Proportional to 145,968.32, 201,138.72 and 100,660.16

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Solution

The fourth proportional to 145,968.32, 201,138.72 and 100,660.16 is: 138,705.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,968.32 : 201,138.72 = 100,660.16 : x
  2. Step 2: Convert to fraction form
    145,968.32/201,138.72 = 100,660.16/x
  3. Step 3: Cross multiply
    145,968.32x = 201,138.72 × 100,660.16
  4. Step 4: Simplify right side
    145,968.32x = 20,246,655,737.40
  5. Step 5: Solve for x
    x = 20,246,655,737.40/145,968.32
  6. Step 6: Final answer
    x = 138,705.82

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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.