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Finding the Fourth Proportional to 106,775.91, 147,346.79 and 61,460.87

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Solution

The fourth proportional to 106,775.91, 147,346.79 and 61,460.87 is: 84,813.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,775.91 : 147,346.79 = 61,460.87 : x
  2. Step 2: Convert to fraction form
    106,775.91/147,346.79 = 61,460.87/x
  3. Step 3: Cross multiply
    106,775.91x = 147,346.79 × 61,460.87
  4. Step 4: Simplify right side
    106,775.91x = 9,056,060,861.07
  5. Step 5: Solve for x
    x = 9,056,060,861.07/106,775.91
  6. Step 6: Final answer
    x = 84,813.71

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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.