Home / 208,629.47-287,908.74-113,136.14

Finding the Fourth Proportional to 208,629.47, 287,908.74 and 113,136.14

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Solution

The fourth proportional to 208,629.47, 287,908.74 and 113,136.14 is: 156,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,629.47 : 287,908.74 = 113,136.14 : x
  2. Step 2: Convert to fraction form
    208,629.47/287,908.74 = 113,136.14/x
  3. Step 3: Cross multiply
    208,629.47x = 287,908.74 × 113,136.14
  4. Step 4: Simplify right side
    208,629.47x = 32,572,883,515.86
  5. Step 5: Solve for x
    x = 32,572,883,515.86/208,629.47
  6. Step 6: Final answer
    x = 156,127.91

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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.