Home / 90,905.18-136,363.96-30,909.22

Finding the Fourth Proportional to 90,905.18, 136,363.96 and 30,909.22

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Solution

The fourth proportional to 90,905.18, 136,363.96 and 30,909.22 is: 46,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,905.18 : 136,363.96 = 30,909.22 : x
  2. Step 2: Convert to fraction form
    90,905.18/136,363.96 = 30,909.22/x
  3. Step 3: Cross multiply
    90,905.18x = 136,363.96 × 30,909.22
  4. Step 4: Simplify right side
    90,905.18x = 4,214,903,639.71
  5. Step 5: Solve for x
    x = 4,214,903,639.71/90,905.18
  6. Step 6: Final answer
    x = 46,365.93

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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.