Home / 208,623.59-287,900.28-113,130.12

Finding the Fourth Proportional to 208,623.59, 287,900.28 and 113,130.12

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Solution

The fourth proportional to 208,623.59, 287,900.28 and 113,130.12 is: 156,119.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,623.59 : 287,900.28 = 113,130.12 : x
  2. Step 2: Convert to fraction form
    208,623.59/287,900.28 = 113,130.12/x
  3. Step 3: Cross multiply
    208,623.59x = 287,900.28 × 113,130.12
  4. Step 4: Simplify right side
    208,623.59x = 32,570,193,224.43
  5. Step 5: Solve for x
    x = 32,570,193,224.43/208,623.59
  6. Step 6: Final answer
    x = 156,119.42

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1.5x scale

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.