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Finding the Fourth Proportional to 98,015.50, 135,261.39 and 53,303.50

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Solution

The fourth proportional to 98,015.50, 135,261.39 and 53,303.50 is: 73,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,015.50 : 135,261.39 = 53,303.50 : x
  2. Step 2: Convert to fraction form
    98,015.50/135,261.39 = 53,303.50/x
  3. Step 3: Cross multiply
    98,015.50x = 135,261.39 × 53,303.50
  4. Step 4: Simplify right side
    98,015.50x = 7,209,905,501.87
  5. Step 5: Solve for x
    x = 7,209,905,501.87/98,015.50
  6. Step 6: Final answer
    x = 73,558.83

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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.