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Finding the Fourth Proportional to 208,118.99, 287,205.08 and 112,625.69

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Solution

The fourth proportional to 208,118.99, 287,205.08 and 112,625.69 is: 155,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,118.99 : 287,205.08 = 112,625.69 : x
  2. Step 2: Convert to fraction form
    208,118.99/287,205.08 = 112,625.69/x
  3. Step 3: Cross multiply
    208,118.99x = 287,205.08 × 112,625.69
  4. Step 4: Simplify right side
    208,118.99x = 32,346,668,307.35
  5. Step 5: Solve for x
    x = 32,346,668,307.35/208,118.99
  6. Step 6: Final answer
    x = 155,423.92

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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.