Home / 134,690.76-185,895.16-81,030

Finding the Fourth Proportional to 134,690.76, 185,895.16 and 81,030

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Solution

The fourth proportional to 134,690.76, 185,895.16 and 81,030 is: 111,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,690.76 : 185,895.16 = 81,030 : x
  2. Step 2: Convert to fraction form
    134,690.76/185,895.16 = 81,030/x
  3. Step 3: Cross multiply
    134,690.76x = 185,895.16 × 81,030
  4. Step 4: Simplify right side
    134,690.76x = 15,063,084,814.80
  5. Step 5: Solve for x
    x = 15,063,084,814.80/134,690.76
  6. Step 6: Final answer
    x = 111,834.58

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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.