Home / 145,777.15-201,173.47-81,250.55

Finding the Fourth Proportional to 145,777.15, 201,173.47 and 81,250.55

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Solution

The fourth proportional to 145,777.15, 201,173.47 and 81,250.55 is: 112,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,777.15 : 201,173.47 = 81,250.55 : x
  2. Step 2: Convert to fraction form
    145,777.15/201,173.47 = 81,250.55/x
  3. Step 3: Cross multiply
    145,777.15x = 201,173.47 × 81,250.55
  4. Step 4: Simplify right side
    145,777.15x = 16,345,454,908.54
  5. Step 5: Solve for x
    x = 16,345,454,908.54/145,777.15
  6. Step 6: Final answer
    x = 112,126.32

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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.