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Finding the Fourth Proportional to 99,698.70, 137,597.43 and 63,403.58

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Solution

The fourth proportional to 99,698.70, 137,597.43 and 63,403.58 is: 87,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,698.70 : 137,597.43 = 63,403.58 : x
  2. Step 2: Convert to fraction form
    99,698.70/137,597.43 = 63,403.58/x
  3. Step 3: Cross multiply
    99,698.70x = 137,597.43 × 63,403.58
  4. Step 4: Simplify right side
    99,698.70x = 8,724,169,468.57
  5. Step 5: Solve for x
    x = 8,724,169,468.57/99,698.70
  6. Step 6: Final answer
    x = 87,505.35

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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.