Home / 102,142.55-153,108.15-38,945.67

Finding the Fourth Proportional to 102,142.55, 153,108.15 and 38,945.67

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Solution

The fourth proportional to 102,142.55, 153,108.15 and 38,945.67 is: 58,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,142.55 : 153,108.15 = 38,945.67 : x
  2. Step 2: Convert to fraction form
    102,142.55/153,108.15 = 38,945.67/x
  3. Step 3: Cross multiply
    102,142.55x = 153,108.15 × 38,945.67
  4. Step 4: Simplify right side
    102,142.55x = 5,962,899,484.21
  5. Step 5: Solve for x
    x = 5,962,899,484.21/102,142.55
  6. Step 6: Final answer
    x = 58,378.21

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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.