Home / 109,638.20-164,457.30-47,308.70

Finding the Fourth Proportional to 109,638.20, 164,457.30 and 47,308.70

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Solution

The fourth proportional to 109,638.20, 164,457.30 and 47,308.70 is: 70,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,638.20 : 164,457.30 = 47,308.70 : x
  2. Step 2: Convert to fraction form
    109,638.20/164,457.30 = 47,308.70/x
  3. Step 3: Cross multiply
    109,638.20x = 164,457.30 × 47,308.70
  4. Step 4: Simplify right side
    109,638.20x = 7,780,261,068.51
  5. Step 5: Solve for x
    x = 7,780,261,068.51/109,638.20
  6. Step 6: Final answer
    x = 70,963.05

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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.