Home / 109,881.40-164,562.90-74,630.20

Finding the Fourth Proportional to 109,881.40, 164,562.90 and 74,630.20

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Solution

The fourth proportional to 109,881.40, 164,562.90 and 74,630.20 is: 111,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,881.40 : 164,562.90 = 74,630.20 : x
  2. Step 2: Convert to fraction form
    109,881.40/164,562.90 = 74,630.20/x
  3. Step 3: Cross multiply
    109,881.40x = 164,562.90 × 74,630.20
  4. Step 4: Simplify right side
    109,881.40x = 12,281,362,139.58
  5. Step 5: Solve for x
    x = 12,281,362,139.58/109,881.40
  6. Step 6: Final answer
    x = 111,769.25

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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.