Home / 145,861.45-218,704.62-57,009.13

Finding the Fourth Proportional to 145,861.45, 218,704.62 and 57,009.13

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Solution

The fourth proportional to 145,861.45, 218,704.62 and 57,009.13 is: 85,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.45 : 218,704.62 = 57,009.13 : x
  2. Step 2: Convert to fraction form
    145,861.45/218,704.62 = 57,009.13/x
  3. Step 3: Cross multiply
    145,861.45x = 218,704.62 × 57,009.13
  4. Step 4: Simplify right side
    145,861.45x = 12,468,160,113.18
  5. Step 5: Solve for x
    x = 12,468,160,113.18/145,861.45
  6. Step 6: Final answer
    x = 85,479.47

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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.