Home / 207,980.10-287,012.85-112,486.74

Finding the Fourth Proportional to 207,980.10, 287,012.85 and 112,486.74

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Solution

The fourth proportional to 207,980.10, 287,012.85 and 112,486.74 is: 155,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,980.10 : 287,012.85 = 112,486.74 : x
  2. Step 2: Convert to fraction form
    207,980.10/287,012.85 = 112,486.74/x
  3. Step 3: Cross multiply
    207,980.10x = 287,012.85 × 112,486.74
  4. Step 4: Simplify right side
    207,980.10x = 32,285,139,834.61
  5. Step 5: Solve for x
    x = 32,285,139,834.61/207,980.10
  6. Step 6: Final answer
    x = 155,231.87

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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.