Home / 112,415.14-155,205.21-72,146.26

Finding the Fourth Proportional to 112,415.14, 155,205.21 and 72,146.26

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Solution

The fourth proportional to 112,415.14, 155,205.21 and 72,146.26 is: 99,608.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,415.14 : 155,205.21 = 72,146.26 : x
  2. Step 2: Convert to fraction form
    112,415.14/155,205.21 = 72,146.26/x
  3. Step 3: Cross multiply
    112,415.14x = 155,205.21 × 72,146.26
  4. Step 4: Simplify right side
    112,415.14x = 11,197,475,434.01
  5. Step 5: Solve for x
    x = 11,197,475,434.01/112,415.14
  6. Step 6: Final answer
    x = 99,608.25

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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.