Home / 108,905.84-163,401-42,392.68

Finding the Fourth Proportional to 108,905.84, 163,401 and 42,392.68

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Solution

The fourth proportional to 108,905.84, 163,401 and 42,392.68 is: 63,605.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,905.84 : 163,401 = 42,392.68 : x
  2. Step 2: Convert to fraction form
    108,905.84/163,401 = 42,392.68/x
  3. Step 3: Cross multiply
    108,905.84x = 163,401 × 42,392.68
  4. Step 4: Simplify right side
    108,905.84x = 6,927,006,304.68
  5. Step 5: Solve for x
    x = 6,927,006,304.68/108,905.84
  6. Step 6: Final answer
    x = 63,605.46

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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.