Home / 145,026.72-200,144.16-90,611.64

Finding the Fourth Proportional to 145,026.72, 200,144.16 and 90,611.64

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Solution

The fourth proportional to 145,026.72, 200,144.16 and 90,611.64 is: 125,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,026.72 : 200,144.16 = 90,611.64 : x
  2. Step 2: Convert to fraction form
    145,026.72/200,144.16 = 90,611.64/x
  3. Step 3: Cross multiply
    145,026.72x = 200,144.16 × 90,611.64
  4. Step 4: Simplify right side
    145,026.72x = 18,135,390,574.02
  5. Step 5: Solve for x
    x = 18,135,390,574.02/145,026.72
  6. Step 6: Final answer
    x = 125,048.62

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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.