Home / 208,631.34-287,911.32-113,138.01

Finding the Fourth Proportional to 208,631.34, 287,911.32 and 113,138.01

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Solution

The fourth proportional to 208,631.34, 287,911.32 and 113,138.01 is: 156,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,631.34 : 287,911.32 = 113,138.01 : x
  2. Step 2: Convert to fraction form
    208,631.34/287,911.32 = 113,138.01/x
  3. Step 3: Cross multiply
    208,631.34x = 287,911.32 × 113,138.01
  4. Step 4: Simplify right side
    208,631.34x = 32,573,713,801.27
  5. Step 5: Solve for x
    x = 32,573,713,801.27/208,631.34
  6. Step 6: Final answer
    x = 156,130.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.