Home / 85,674.24-129,096.36-70,433.28

Finding the Fourth Proportional to 85,674.24, 129,096.36 and 70,433.28

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Solution

The fourth proportional to 85,674.24, 129,096.36 and 70,433.28 is: 106,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,674.24 : 129,096.36 = 70,433.28 : x
  2. Step 2: Convert to fraction form
    85,674.24/129,096.36 = 70,433.28/x
  3. Step 3: Cross multiply
    85,674.24x = 129,096.36 × 70,433.28
  4. Step 4: Simplify right side
    85,674.24x = 9,092,680,070.86
  5. Step 5: Solve for x
    x = 9,092,680,070.86/85,674.24
  6. Step 6: Final answer
    x = 106,130.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.