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Finding the Fourth Proportional to 108,350.40, 162,208.80 and 77,246.40

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Solution

The fourth proportional to 108,350.40, 162,208.80 and 77,246.40 is: 115,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,350.40 : 162,208.80 = 77,246.40 : x
  2. Step 2: Convert to fraction form
    108,350.40/162,208.80 = 77,246.40/x
  3. Step 3: Cross multiply
    108,350.40x = 162,208.80 × 77,246.40
  4. Step 4: Simplify right side
    108,350.40x = 12,530,045,848.32
  5. Step 5: Solve for x
    x = 12,530,045,848.32/108,350.40
  6. Step 6: Final answer
    x = 115,643.74

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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.