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Finding the Fourth Proportional to 106,355.80, 159,533.70 and 103,731.40

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Solution

The fourth proportional to 106,355.80, 159,533.70 and 103,731.40 is: 155,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,355.80 : 159,533.70 = 103,731.40 : x
  2. Step 2: Convert to fraction form
    106,355.80/159,533.70 = 103,731.40/x
  3. Step 3: Cross multiply
    106,355.80x = 159,533.70 × 103,731.40
  4. Step 4: Simplify right side
    106,355.80x = 16,548,654,048.18
  5. Step 5: Solve for x
    x = 16,548,654,048.18/106,355.80
  6. Step 6: Final answer
    x = 155,597.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.