Home / 208,120.10-287,206.64-112,626.81

Finding the Fourth Proportional to 208,120.10, 287,206.64 and 112,626.81

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Solution

The fourth proportional to 208,120.10, 287,206.64 and 112,626.81 is: 155,425.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,120.10 : 287,206.64 = 112,626.81 : x
  2. Step 2: Convert to fraction form
    208,120.10/287,206.64 = 112,626.81/x
  3. Step 3: Cross multiply
    208,120.10x = 287,206.64 × 112,626.81
  4. Step 4: Simplify right side
    208,120.10x = 32,347,167,110.88
  5. Step 5: Solve for x
    x = 32,347,167,110.88/208,120.10
  6. Step 6: Final answer
    x = 155,425.49

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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.