Home / 208,012.30-287,056.64-112,518.70

Finding the Fourth Proportional to 208,012.30, 287,056.64 and 112,518.70

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Solution

The fourth proportional to 208,012.30, 287,056.64 and 112,518.70 is: 155,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,012.30 : 287,056.64 = 112,518.70 : x
  2. Step 2: Convert to fraction form
    208,012.30/287,056.64 = 112,518.70/x
  3. Step 3: Cross multiply
    208,012.30x = 287,056.64 × 112,518.70
  4. Step 4: Simplify right side
    208,012.30x = 32,299,239,959.17
  5. Step 5: Solve for x
    x = 32,299,239,959.17/208,012.30
  6. Step 6: Final answer
    x = 155,275.63

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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.