Home / 112,860.91-155,749.80-61,878.52

Finding the Fourth Proportional to 112,860.91, 155,749.80 and 61,878.52

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Solution

The fourth proportional to 112,860.91, 155,749.80 and 61,878.52 is: 85,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,860.91 : 155,749.80 = 61,878.52 : x
  2. Step 2: Convert to fraction form
    112,860.91/155,749.80 = 61,878.52/x
  3. Step 3: Cross multiply
    112,860.91x = 155,749.80 × 61,878.52
  4. Step 4: Simplify right side
    112,860.91x = 9,637,567,114.30
  5. Step 5: Solve for x
    x = 9,637,567,114.30/112,860.91
  6. Step 6: Final answer
    x = 85,393.31

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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.