Home / 102,289.70-153,430.92-31,209.47

Finding the Fourth Proportional to 102,289.70, 153,430.92 and 31,209.47

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Solution

The fourth proportional to 102,289.70, 153,430.92 and 31,209.47 is: 46,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,289.70 : 153,430.92 = 31,209.47 : x
  2. Step 2: Convert to fraction form
    102,289.70/153,430.92 = 31,209.47/x
  3. Step 3: Cross multiply
    102,289.70x = 153,430.92 × 31,209.47
  4. Step 4: Simplify right side
    102,289.70x = 4,788,496,771.61
  5. Step 5: Solve for x
    x = 4,788,496,771.61/102,289.70
  6. Step 6: Final answer
    x = 46,813.09

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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.