Home / 145,865.81-218,711.13-57,013.46

Finding the Fourth Proportional to 145,865.81, 218,711.13 and 57,013.46

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Solution

The fourth proportional to 145,865.81, 218,711.13 and 57,013.46 is: 85,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,865.81 : 218,711.13 = 57,013.46 : x
  2. Step 2: Convert to fraction form
    145,865.81/218,711.13 = 57,013.46/x
  3. Step 3: Cross multiply
    145,865.81x = 218,711.13 × 57,013.46
  4. Step 4: Simplify right side
    145,865.81x = 12,469,478,261.81
  5. Step 5: Solve for x
    x = 12,469,478,261.81/145,865.81
  6. Step 6: Final answer
    x = 85,485.96

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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.