Home / 112,985.88-155,919.74-62,684.88

Finding the Fourth Proportional to 112,985.88, 155,919.74 and 62,684.88

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Solution

The fourth proportional to 112,985.88, 155,919.74 and 62,684.88 is: 86,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,985.88 : 155,919.74 = 62,684.88 : x
  2. Step 2: Convert to fraction form
    112,985.88/155,919.74 = 62,684.88/x
  3. Step 3: Cross multiply
    112,985.88x = 155,919.74 × 62,684.88
  4. Step 4: Simplify right side
    112,985.88x = 9,773,809,878.11
  5. Step 5: Solve for x
    x = 9,773,809,878.11/112,985.88
  6. Step 6: Final answer
    x = 86,504.70

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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.