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Finding the Fourth Proportional to 108,686.80, 163,030.20 and 104,750.20

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Solution

The fourth proportional to 108,686.80, 163,030.20 and 104,750.20 is: 157,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,686.80 : 163,030.20 = 104,750.20 : x
  2. Step 2: Convert to fraction form
    108,686.80/163,030.20 = 104,750.20/x
  3. Step 3: Cross multiply
    108,686.80x = 163,030.20 × 104,750.20
  4. Step 4: Simplify right side
    108,686.80x = 17,077,446,056.04
  5. Step 5: Solve for x
    x = 17,077,446,056.04/108,686.80
  6. Step 6: Final answer
    x = 157,125.30

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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.