Home / 211,352.40-317,071.80-71,125.20

Finding the Fourth Proportional to 211,352.40, 317,071.80 and 71,125.20

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Solution

The fourth proportional to 211,352.40, 317,071.80 and 71,125.20 is: 106,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,352.40 : 317,071.80 = 71,125.20 : x
  2. Step 2: Convert to fraction form
    211,352.40/317,071.80 = 71,125.20/x
  3. Step 3: Cross multiply
    211,352.40x = 317,071.80 × 71,125.20
  4. Step 4: Simplify right side
    211,352.40x = 22,551,795,189.36
  5. Step 5: Solve for x
    x = 22,551,795,189.36/211,352.40
  6. Step 6: Final answer
    x = 106,702.34

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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.