Home / 122,783.96-169,430.06-75,085.50

Finding the Fourth Proportional to 122,783.96, 169,430.06 and 75,085.50

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Solution

The fourth proportional to 122,783.96, 169,430.06 and 75,085.50 is: 103,610.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,783.96 : 169,430.06 = 75,085.50 : x
  2. Step 2: Convert to fraction form
    122,783.96/169,430.06 = 75,085.50/x
  3. Step 3: Cross multiply
    122,783.96x = 169,430.06 × 75,085.50
  4. Step 4: Simplify right side
    122,783.96x = 12,721,740,770.13
  5. Step 5: Solve for x
    x = 12,721,740,770.13/122,783.96
  6. Step 6: Final answer
    x = 103,610.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.