Home / 208,130.32-287,220.20-112,637.09

Finding the Fourth Proportional to 208,130.32, 287,220.20 and 112,637.09

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Solution

The fourth proportional to 208,130.32, 287,220.20 and 112,637.09 is: 155,439.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,130.32 : 287,220.20 = 112,637.09 : x
  2. Step 2: Convert to fraction form
    208,130.32/287,220.20 = 112,637.09/x
  3. Step 3: Cross multiply
    208,130.32x = 287,220.20 × 112,637.09
  4. Step 4: Simplify right side
    208,130.32x = 32,351,646,954.03
  5. Step 5: Solve for x
    x = 32,351,646,954.03/208,130.32
  6. Step 6: Final answer
    x = 155,439.38

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Find fourth proportional to 208,131.32, 287,221.58 and 112,638.09
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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.