Home / 208,179.28-287,287.56-112,685.68

Finding the Fourth Proportional to 208,179.28, 287,287.56 and 112,685.68

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Solution

The fourth proportional to 208,179.28, 287,287.56 and 112,685.68 is: 155,506.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179.28 : 287,287.56 = 112,685.68 : x
  2. Step 2: Convert to fraction form
    208,179.28/287,287.56 = 112,685.68/x
  3. Step 3: Cross multiply
    208,179.28x = 287,287.56 × 112,685.68
  4. Step 4: Simplify right side
    208,179.28x = 32,373,194,054.14
  5. Step 5: Solve for x
    x = 32,373,194,054.14/208,179.28
  6. Step 6: Final answer
    x = 155,506.32

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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.