Home / 112,036.40-168,054.60-72,378.80

Finding the Fourth Proportional to 112,036.40, 168,054.60 and 72,378.80

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Solution

The fourth proportional to 112,036.40, 168,054.60 and 72,378.80 is: 108,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,036.40 : 168,054.60 = 72,378.80 : x
  2. Step 2: Convert to fraction form
    112,036.40/168,054.60 = 72,378.80/x
  3. Step 3: Cross multiply
    112,036.40x = 168,054.60 × 72,378.80
  4. Step 4: Simplify right side
    112,036.40x = 12,163,590,282.48
  5. Step 5: Solve for x
    x = 12,163,590,282.48/112,036.40
  6. Step 6: Final answer
    x = 108,568.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.