Home / 145,756.32-201,154.18-81,229.90

Finding the Fourth Proportional to 145,756.32, 201,154.18 and 81,229.90

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Solution

The fourth proportional to 145,756.32, 201,154.18 and 81,229.90 is: 112,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,756.32 : 201,154.18 = 81,229.90 : x
  2. Step 2: Convert to fraction form
    145,756.32/201,154.18 = 81,229.90/x
  3. Step 3: Cross multiply
    145,756.32x = 201,154.18 × 81,229.90
  4. Step 4: Simplify right side
    145,756.32x = 16,339,733,925.98
  5. Step 5: Solve for x
    x = 16,339,733,925.98/145,756.32
  6. Step 6: Final answer
    x = 112,103.09

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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.