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Finding the Fourth Proportional to 122,999.40, 184,061.70 and 112,501.80

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Solution

The fourth proportional to 122,999.40, 184,061.70 and 112,501.80 is: 168,352.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,999.40 : 184,061.70 = 112,501.80 : x
  2. Step 2: Convert to fraction form
    122,999.40/184,061.70 = 112,501.80/x
  3. Step 3: Cross multiply
    122,999.40x = 184,061.70 × 112,501.80
  4. Step 4: Simplify right side
    122,999.40x = 20,707,272,561.06
  5. Step 5: Solve for x
    x = 20,707,272,561.06/122,999.40
  6. Step 6: Final answer
    x = 168,352.63

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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.