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Finding the Fourth Proportional to 153,912.90, 230,869.35 and 70,968.90

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Solution

The fourth proportional to 153,912.90, 230,869.35 and 70,968.90 is: 106,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,912.90 : 230,869.35 = 70,968.90 : x
  2. Step 2: Convert to fraction form
    153,912.90/230,869.35 = 70,968.90/x
  3. Step 3: Cross multiply
    153,912.90x = 230,869.35 × 70,968.90
  4. Step 4: Simplify right side
    153,912.90x = 16,384,543,813.22
  5. Step 5: Solve for x
    x = 16,384,543,813.22/153,912.90
  6. Step 6: Final answer
    x = 106,453.35

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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.