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Finding the Fourth Proportional to 94,145.30, 129,889.21 and 55,916.54

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Solution

The fourth proportional to 94,145.30, 129,889.21 and 55,916.54 is: 77,146.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,145.30 : 129,889.21 = 55,916.54 : x
  2. Step 2: Convert to fraction form
    94,145.30/129,889.21 = 55,916.54/x
  3. Step 3: Cross multiply
    94,145.30x = 129,889.21 × 55,916.54
  4. Step 4: Simplify right side
    94,145.30x = 7,262,955,206.53
  5. Step 5: Solve for x
    x = 7,262,955,206.53/94,145.30
  6. Step 6: Final answer
    x = 77,146.23

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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.