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Finding the Fourth Proportional to 113,006.70, 155,966.67 and 65,256.30

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Solution

The fourth proportional to 113,006.70, 155,966.67 and 65,256.30 is: 90,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,006.70 : 155,966.67 = 65,256.30 : x
  2. Step 2: Convert to fraction form
    113,006.70/155,966.67 = 65,256.30/x
  3. Step 3: Cross multiply
    113,006.70x = 155,966.67 × 65,256.30
  4. Step 4: Simplify right side
    113,006.70x = 10,177,807,807.52
  5. Step 5: Solve for x
    x = 10,177,807,807.52/113,006.70
  6. Step 6: Final answer
    x = 90,063.76

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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.