Home / 112,729.03-155,559.86-61,731.87

Finding the Fourth Proportional to 112,729.03, 155,559.86 and 61,731.87

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Solution

The fourth proportional to 112,729.03, 155,559.86 and 61,731.87 is: 85,186.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,729.03 : 155,559.86 = 61,731.87 : x
  2. Step 2: Convert to fraction form
    112,729.03/155,559.86 = 61,731.87/x
  3. Step 3: Cross multiply
    112,729.03x = 155,559.86 × 61,731.87
  4. Step 4: Simplify right side
    112,729.03x = 9,603,001,054.74
  5. Step 5: Solve for x
    x = 9,603,001,054.74/112,729.03
  6. Step 6: Final answer
    x = 85,186.58

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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.