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Finding the Fourth Proportional to 188,519.04, 260,159.52 and 103,639.68

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Solution

The fourth proportional to 188,519.04, 260,159.52 and 103,639.68 is: 143,024.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,519.04 : 260,159.52 = 103,639.68 : x
  2. Step 2: Convert to fraction form
    188,519.04/260,159.52 = 103,639.68/x
  3. Step 3: Cross multiply
    188,519.04x = 260,159.52 × 103,639.68
  4. Step 4: Simplify right side
    188,519.04x = 26,962,849,401.75
  5. Step 5: Solve for x
    x = 26,962,849,401.75/188,519.04
  6. Step 6: Final answer
    x = 143,024.54

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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.