Home / 208,009.10-287,051.20-112,513.75

Finding the Fourth Proportional to 208,009.10, 287,051.20 and 112,513.75

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Solution

The fourth proportional to 208,009.10, 287,051.20 and 112,513.75 is: 155,268.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009.10 : 287,051.20 = 112,513.75 : x
  2. Step 2: Convert to fraction form
    208,009.10/287,051.20 = 112,513.75/x
  3. Step 3: Cross multiply
    208,009.10x = 287,051.20 × 112,513.75
  4. Step 4: Simplify right side
    208,009.10x = 32,297,206,954
  5. Step 5: Solve for x
    x = 32,297,206,954/208,009.10
  6. Step 6: Final answer
    x = 155,268.24

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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.