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Finding the Fourth Proportional to 98,749.60, 148,124.40 and 43,345.60

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Solution

The fourth proportional to 98,749.60, 148,124.40 and 43,345.60 is: 65,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,749.60 : 148,124.40 = 43,345.60 : x
  2. Step 2: Convert to fraction form
    98,749.60/148,124.40 = 43,345.60/x
  3. Step 3: Cross multiply
    98,749.60x = 148,124.40 × 43,345.60
  4. Step 4: Simplify right side
    98,749.60x = 6,420,540,992.64
  5. Step 5: Solve for x
    x = 6,420,540,992.64/98,749.60
  6. Step 6: Final answer
    x = 65,018.40

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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.