Home / 105,220.55-157,830.81-38,631.86

Finding the Fourth Proportional to 105,220.55, 157,830.81 and 38,631.86

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Solution

The fourth proportional to 105,220.55, 157,830.81 and 38,631.86 is: 57,947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,220.55 : 157,830.81 = 38,631.86 : x
  2. Step 2: Convert to fraction form
    105,220.55/157,830.81 = 38,631.86/x
  3. Step 3: Cross multiply
    105,220.55x = 157,830.81 × 38,631.86
  4. Step 4: Simplify right side
    105,220.55x = 6,097,297,755.61
  5. Step 5: Solve for x
    x = 6,097,297,755.61/105,220.55
  6. Step 6: Final answer
    x = 57,947.78

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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.