Home / 208,132.12-287,222.32-112,638.81

Finding the Fourth Proportional to 208,132.12, 287,222.32 and 112,638.81

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Solution

The fourth proportional to 208,132.12, 287,222.32 and 112,638.81 is: 155,441.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,132.12 : 287,222.32 = 112,638.81 : x
  2. Step 2: Convert to fraction form
    208,132.12/287,222.32 = 112,638.81/x
  3. Step 3: Cross multiply
    208,132.12x = 287,222.32 × 112,638.81
  4. Step 4: Simplify right side
    208,132.12x = 32,352,380,048.64
  5. Step 5: Solve for x
    x = 32,352,380,048.64/208,132.12
  6. Step 6: Final answer
    x = 155,441.56

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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.