Home / 161,909.03-242,859.90-73,138.70

Finding the Fourth Proportional to 161,909.03, 242,859.90 and 73,138.70

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Solution

The fourth proportional to 161,909.03, 242,859.90 and 73,138.70 is: 109,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,909.03 : 242,859.90 = 73,138.70 : x
  2. Step 2: Convert to fraction form
    161,909.03/242,859.90 = 73,138.70/x
  3. Step 3: Cross multiply
    161,909.03x = 242,859.90 × 73,138.70
  4. Step 4: Simplify right side
    161,909.03x = 17,762,457,368.13
  5. Step 5: Solve for x
    x = 17,762,457,368.13/161,909.03
  6. Step 6: Final answer
    x = 109,706.40

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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.