Home / 112,537.12-155,228.06-72,186.98

Finding the Fourth Proportional to 112,537.12, 155,228.06 and 72,186.98

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Solution

The fourth proportional to 112,537.12, 155,228.06 and 72,186.98 is: 99,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,537.12 : 155,228.06 = 72,186.98 : x
  2. Step 2: Convert to fraction form
    112,537.12/155,228.06 = 72,186.98/x
  3. Step 3: Cross multiply
    112,537.12x = 155,228.06 × 72,186.98
  4. Step 4: Simplify right side
    112,537.12x = 11,205,444,862.66
  5. Step 5: Solve for x
    x = 11,205,444,862.66/112,537.12
  6. Step 6: Final answer
    x = 99,571.10

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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.