Home / 191,420.14-287,246.40-71,564.36

Finding the Fourth Proportional to 191,420.14, 287,246.40 and 71,564.36

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Solution

The fourth proportional to 191,420.14, 287,246.40 and 71,564.36 is: 107,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,420.14 : 287,246.40 = 71,564.36 : x
  2. Step 2: Convert to fraction form
    191,420.14/287,246.40 = 71,564.36/x
  3. Step 3: Cross multiply
    191,420.14x = 287,246.40 × 71,564.36
  4. Step 4: Simplify right side
    191,420.14x = 20,556,604,778.30
  5. Step 5: Solve for x
    x = 20,556,604,778.30/191,420.14
  6. Step 6: Final answer
    x = 107,389.98

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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.