Home / 208,127.32-287,216.05-112,634.09

Finding the Fourth Proportional to 208,127.32, 287,216.05 and 112,634.09

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Solution

The fourth proportional to 208,127.32, 287,216.05 and 112,634.09 is: 155,435.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,127.32 : 287,216.05 = 112,634.09 : x
  2. Step 2: Convert to fraction form
    208,127.32/287,216.05 = 112,634.09/x
  3. Step 3: Cross multiply
    208,127.32x = 287,216.05 × 112,634.09
  4. Step 4: Simplify right side
    208,127.32x = 32,350,316,989.06
  5. Step 5: Solve for x
    x = 32,350,316,989.06/208,127.32
  6. Step 6: Final answer
    x = 155,435.23

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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.