Home / 208,122.10-287,208.46-112,628.80

Finding the Fourth Proportional to 208,122.10, 287,208.46 and 112,628.80

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Solution

The fourth proportional to 208,122.10, 287,208.46 and 112,628.80 is: 155,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,122.10 : 287,208.46 = 112,628.80 : x
  2. Step 2: Convert to fraction form
    208,122.10/287,208.46 = 112,628.80/x
  3. Step 3: Cross multiply
    208,122.10x = 287,208.46 × 112,628.80
  4. Step 4: Simplify right side
    208,122.10x = 32,347,944,199.65
  5. Step 5: Solve for x
    x = 32,347,944,199.65/208,122.10
  6. Step 6: Final answer
    x = 155,427.72

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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.