Home / 112,521.69-155,208.29-85,605.39

Finding the Fourth Proportional to 112,521.69, 155,208.29 and 85,605.39

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Solution

The fourth proportional to 112,521.69, 155,208.29 and 85,605.39 is: 118,080.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,521.69 : 155,208.29 = 85,605.39 : x
  2. Step 2: Convert to fraction form
    112,521.69/155,208.29 = 85,605.39/x
  3. Step 3: Cross multiply
    112,521.69x = 155,208.29 × 85,605.39
  4. Step 4: Simplify right side
    112,521.69x = 13,286,665,768.66
  5. Step 5: Solve for x
    x = 13,286,665,768.66/112,521.69
  6. Step 6: Final answer
    x = 118,080.93

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1.5x scale

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.