Home / 112,638.90-155,441.70-70,197.60

Finding the Fourth Proportional to 112,638.90, 155,441.70 and 70,197.60

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Solution

The fourth proportional to 112,638.90, 155,441.70 and 70,197.60 is: 96,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,638.90 : 155,441.70 = 70,197.60 : x
  2. Step 2: Convert to fraction form
    112,638.90/155,441.70 = 70,197.60/x
  3. Step 3: Cross multiply
    112,638.90x = 155,441.70 × 70,197.60
  4. Step 4: Simplify right side
    112,638.90x = 10,911,634,279.92
  5. Step 5: Solve for x
    x = 10,911,634,279.92/112,638.90
  6. Step 6: Final answer
    x = 96,872.70

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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.