Home / 208,131.09-287,220.89-112,637.81

Finding the Fourth Proportional to 208,131.09, 287,220.89 and 112,637.81

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Solution

The fourth proportional to 208,131.09, 287,220.89 and 112,637.81 is: 155,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,131.09 : 287,220.89 = 112,637.81 : x
  2. Step 2: Convert to fraction form
    208,131.09/287,220.89 = 112,637.81/x
  3. Step 3: Cross multiply
    208,131.09x = 287,220.89 × 112,637.81
  4. Step 4: Simplify right side
    208,131.09x = 32,351,930,036.56
  5. Step 5: Solve for x
    x = 32,351,930,036.56/208,131.09
  6. Step 6: Final answer
    x = 155,440.16

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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.