Home / 85,433.40-128,150.10-23,103.90

Finding the Fourth Proportional to 85,433.40, 128,150.10 and 23,103.90

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Solution

The fourth proportional to 85,433.40, 128,150.10 and 23,103.90 is: 34,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433.40 : 128,150.10 = 23,103.90 : x
  2. Step 2: Convert to fraction form
    85,433.40/128,150.10 = 23,103.90/x
  3. Step 3: Cross multiply
    85,433.40x = 128,150.10 × 23,103.90
  4. Step 4: Simplify right side
    85,433.40x = 2,960,767,095.39
  5. Step 5: Solve for x
    x = 2,960,767,095.39/85,433.40
  6. Step 6: Final answer
    x = 34,655.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.