Home / 208,198.80-287,314.02-112,705.47

Finding the Fourth Proportional to 208,198.80, 287,314.02 and 112,705.47

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Solution

The fourth proportional to 208,198.80, 287,314.02 and 112,705.47 is: 155,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,198.80 : 287,314.02 = 112,705.47 : x
  2. Step 2: Convert to fraction form
    208,198.80/287,314.02 = 112,705.47/x
  3. Step 3: Cross multiply
    208,198.80x = 287,314.02 × 112,705.47
  4. Step 4: Simplify right side
    208,198.80x = 32,381,861,661.69
  5. Step 5: Solve for x
    x = 32,381,861,661.69/208,198.80
  6. Step 6: Final answer
    x = 155,533.37

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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.