Home / 208,132.07-287,222.76-112,639.82

Finding the Fourth Proportional to 208,132.07, 287,222.76 and 112,639.82

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Solution

The fourth proportional to 208,132.07, 287,222.76 and 112,639.82 is: 155,443.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,132.07 : 287,222.76 = 112,639.82 : x
  2. Step 2: Convert to fraction form
    208,132.07/287,222.76 = 112,639.82/x
  3. Step 3: Cross multiply
    208,132.07x = 287,222.76 × 112,639.82
  4. Step 4: Simplify right side
    208,132.07x = 32,352,718,550.19
  5. Step 5: Solve for x
    x = 32,352,718,550.19/208,132.07
  6. Step 6: Final answer
    x = 155,443.22

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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.