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Finding the Fourth Proportional to 108,345.60, 162,712.80 and 104,846.40

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Solution

The fourth proportional to 108,345.60, 162,712.80 and 104,846.40 is: 157,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,345.60 : 162,712.80 = 104,846.40 : x
  2. Step 2: Convert to fraction form
    108,345.60/162,712.80 = 104,846.40/x
  3. Step 3: Cross multiply
    108,345.60x = 162,712.80 × 104,846.40
  4. Step 4: Simplify right side
    108,345.60x = 17,059,851,313.92
  5. Step 5: Solve for x
    x = 17,059,851,313.92/108,345.60
  6. Step 6: Final answer
    x = 157,457.72

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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.