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Finding the Fourth Proportional to 98,313.40, 135,656.72 and 55,292.74

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Solution

The fourth proportional to 98,313.40, 135,656.72 and 55,292.74 is: 76,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,313.40 : 135,656.72 = 55,292.74 : x
  2. Step 2: Convert to fraction form
    98,313.40/135,656.72 = 55,292.74/x
  3. Step 3: Cross multiply
    98,313.40x = 135,656.72 × 55,292.74
  4. Step 4: Simplify right side
    98,313.40x = 7,500,831,748.21
  5. Step 5: Solve for x
    x = 7,500,831,748.21/98,313.40
  6. Step 6: Final answer
    x = 76,295.11

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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.