Home / 208,070.07-287,136.69-112,576.77

Finding the Fourth Proportional to 208,070.07, 287,136.69 and 112,576.77

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Solution

The fourth proportional to 208,070.07, 287,136.69 and 112,576.77 is: 155,355.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,070.07 : 287,136.69 = 112,576.77 : x
  2. Step 2: Convert to fraction form
    208,070.07/287,136.69 = 112,576.77/x
  3. Step 3: Cross multiply
    208,070.07x = 287,136.69 × 112,576.77
  4. Step 4: Simplify right side
    208,070.07x = 32,324,921,108.69
  5. Step 5: Solve for x
    x = 32,324,921,108.69/208,070.07
  6. Step 6: Final answer
    x = 155,355.94

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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.