Home / 208,135.12-287,226.36-112,641.76

Finding the Fourth Proportional to 208,135.12, 287,226.36 and 112,641.76

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Solution

The fourth proportional to 208,135.12, 287,226.36 and 112,641.76 is: 155,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,135.12 : 287,226.36 = 112,641.76 : x
  2. Step 2: Convert to fraction form
    208,135.12/287,226.36 = 112,641.76/x
  3. Step 3: Cross multiply
    208,135.12x = 287,226.36 × 112,641.76
  4. Step 4: Simplify right side
    208,135.12x = 32,353,682,708.79
  5. Step 5: Solve for x
    x = 32,353,682,708.79/208,135.12
  6. Step 6: Final answer
    x = 155,445.57

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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.