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Finding the Fourth Proportional to 86,699.64, 119,185.89 and 74,555.58

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Solution

The fourth proportional to 86,699.64, 119,185.89 and 74,555.58 is: 102,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,699.64 : 119,185.89 = 74,555.58 : x
  2. Step 2: Convert to fraction form
    86,699.64/119,185.89 = 74,555.58/x
  3. Step 3: Cross multiply
    86,699.64x = 119,185.89 × 74,555.58
  4. Step 4: Simplify right side
    86,699.64x = 8,885,973,156.77
  5. Step 5: Solve for x
    x = 8,885,973,156.77/86,699.64
  6. Step 6: Final answer
    x = 102,491.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.