Home / 191,830.91-287,829.27-102,980.66

Finding the Fourth Proportional to 191,830.91, 287,829.27 and 102,980.66

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Solution

The fourth proportional to 191,830.91, 287,829.27 and 102,980.66 is: 154,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,830.91 : 287,829.27 = 102,980.66 : x
  2. Step 2: Convert to fraction form
    191,830.91/287,829.27 = 102,980.66/x
  3. Step 3: Cross multiply
    191,830.91x = 287,829.27 × 102,980.66
  4. Step 4: Simplify right side
    191,830.91x = 29,640,846,752.77
  5. Step 5: Solve for x
    x = 29,640,846,752.77/191,830.91
  6. Step 6: Final answer
    x = 154,515.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.