Home / 131,111.40-180,922.98-74,509.80

Finding the Fourth Proportional to 131,111.40, 180,922.98 and 74,509.80

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Solution

The fourth proportional to 131,111.40, 180,922.98 and 74,509.80 is: 102,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,111.40 : 180,922.98 = 74,509.80 : x
  2. Step 2: Convert to fraction form
    131,111.40/180,922.98 = 74,509.80/x
  3. Step 3: Cross multiply
    131,111.40x = 180,922.98 × 74,509.80
  4. Step 4: Simplify right side
    131,111.40x = 13,480,535,055.20
  5. Step 5: Solve for x
    x = 13,480,535,055.20/131,111.40
  6. Step 6: Final answer
    x = 102,817.41

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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.