Home / 112,587.21-155,364.75-61,600.95

Finding the Fourth Proportional to 112,587.21, 155,364.75 and 61,600.95

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Solution

The fourth proportional to 112,587.21, 155,364.75 and 61,600.95 is: 85,006.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,587.21 : 155,364.75 = 61,600.95 : x
  2. Step 2: Convert to fraction form
    112,587.21/155,364.75 = 61,600.95/x
  3. Step 3: Cross multiply
    112,587.21x = 155,364.75 × 61,600.95
  4. Step 4: Simplify right side
    112,587.21x = 9,570,616,196.51
  5. Step 5: Solve for x
    x = 9,570,616,196.51/112,587.21
  6. Step 6: Final answer
    x = 85,006.25

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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.