Home / 112,359.06-155,015.21-66,409.07

Finding the Fourth Proportional to 112,359.06, 155,015.21 and 66,409.07

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Solution

The fourth proportional to 112,359.06, 155,015.21 and 66,409.07 is: 91,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,359.06 : 155,015.21 = 66,409.07 : x
  2. Step 2: Convert to fraction form
    112,359.06/155,015.21 = 66,409.07/x
  3. Step 3: Cross multiply
    112,359.06x = 155,015.21 × 66,409.07
  4. Step 4: Simplify right side
    112,359.06x = 10,294,415,322.90
  5. Step 5: Solve for x
    x = 10,294,415,322.90/112,359.06
  6. Step 6: Final answer
    x = 91,620.70

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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.