Home / 208,117.09-287,202.39-112,623.82

Finding the Fourth Proportional to 208,117.09, 287,202.39 and 112,623.82

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Solution

The fourth proportional to 208,117.09, 287,202.39 and 112,623.82 is: 155,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.09 : 287,202.39 = 112,623.82 : x
  2. Step 2: Convert to fraction form
    208,117.09/287,202.39 = 112,623.82/x
  3. Step 3: Cross multiply
    208,117.09x = 287,202.39 × 112,623.82
  4. Step 4: Simplify right side
    208,117.09x = 32,345,830,274.93
  5. Step 5: Solve for x
    x = 32,345,830,274.93/208,117.09
  6. Step 6: Final answer
    x = 155,421.31

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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.