Home / 109,538.60-164,307.90-70,172.60

Finding the Fourth Proportional to 109,538.60, 164,307.90 and 70,172.60

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Solution

The fourth proportional to 109,538.60, 164,307.90 and 70,172.60 is: 105,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,538.60 : 164,307.90 = 70,172.60 : x
  2. Step 2: Convert to fraction form
    109,538.60/164,307.90 = 70,172.60/x
  3. Step 3: Cross multiply
    109,538.60x = 164,307.90 × 70,172.60
  4. Step 4: Simplify right side
    109,538.60x = 11,529,912,543.54
  5. Step 5: Solve for x
    x = 11,529,912,543.54/109,538.60
  6. Step 6: Final answer
    x = 105,258.90

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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.