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Finding the Fourth Proportional to 102,563.80, 153,845.70 and 83,901.40

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Solution

The fourth proportional to 102,563.80, 153,845.70 and 83,901.40 is: 125,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,563.80 : 153,845.70 = 83,901.40 : x
  2. Step 2: Convert to fraction form
    102,563.80/153,845.70 = 83,901.40/x
  3. Step 3: Cross multiply
    102,563.80x = 153,845.70 × 83,901.40
  4. Step 4: Simplify right side
    102,563.80x = 12,907,869,613.98
  5. Step 5: Solve for x
    x = 12,907,869,613.98/102,563.80
  6. Step 6: Final answer
    x = 125,852.10

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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.