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Finding the Fourth Proportional to 108,712.30, 163,068.45 and 93,678.70

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Solution

The fourth proportional to 108,712.30, 163,068.45 and 93,678.70 is: 140,518.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,712.30 : 163,068.45 = 93,678.70 : x
  2. Step 2: Convert to fraction form
    108,712.30/163,068.45 = 93,678.70/x
  3. Step 3: Cross multiply
    108,712.30x = 163,068.45 × 93,678.70
  4. Step 4: Simplify right side
    108,712.30x = 15,276,040,407.02
  5. Step 5: Solve for x
    x = 15,276,040,407.02/108,712.30
  6. Step 6: Final answer
    x = 140,518.05

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1.5x scale

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.