Home / 208,136.12-287,227.74-112,642.76

Finding the Fourth Proportional to 208,136.12, 287,227.74 and 112,642.76

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Solution

The fourth proportional to 208,136.12, 287,227.74 and 112,642.76 is: 155,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,136.12 : 287,227.74 = 112,642.76 : x
  2. Step 2: Convert to fraction form
    208,136.12/287,227.74 = 112,642.76/x
  3. Step 3: Cross multiply
    208,136.12x = 287,227.74 × 112,642.76
  4. Step 4: Simplify right side
    208,136.12x = 32,354,125,382.16
  5. Step 5: Solve for x
    x = 32,354,125,382.16/208,136.12
  6. Step 6: Final answer
    x = 155,446.95

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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.