Home / 208,630.03-287,909.52-113,136.70

Finding the Fourth Proportional to 208,630.03, 287,909.52 and 113,136.70

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Solution

The fourth proportional to 208,630.03, 287,909.52 and 113,136.70 is: 156,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,630.03 : 287,909.52 = 113,136.70 : x
  2. Step 2: Convert to fraction form
    208,630.03/287,909.52 = 113,136.70/x
  3. Step 3: Cross multiply
    208,630.03x = 287,909.52 × 113,136.70
  4. Step 4: Simplify right side
    208,630.03x = 32,573,132,991.38
  5. Step 5: Solve for x
    x = 32,573,132,991.38/208,630.03
  6. Step 6: Final answer
    x = 156,128.69

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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.