Home / 202,128.90-303,412.05-113,555.40

Finding the Fourth Proportional to 202,128.90, 303,412.05 and 113,555.40

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Solution

The fourth proportional to 202,128.90, 303,412.05 and 113,555.40 is: 170,455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,128.90 : 303,412.05 = 113,555.40 : x
  2. Step 2: Convert to fraction form
    202,128.90/303,412.05 = 113,555.40/x
  3. Step 3: Cross multiply
    202,128.90x = 303,412.05 × 113,555.40
  4. Step 4: Simplify right side
    202,128.90x = 34,454,076,702.57
  5. Step 5: Solve for x
    x = 34,454,076,702.57/202,128.90
  6. Step 6: Final answer
    x = 170,455.96

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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.