Home / 79,208.98-109,271.75-70,143.58

Finding the Fourth Proportional to 79,208.98, 109,271.75 and 70,143.58

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Solution

The fourth proportional to 79,208.98, 109,271.75 and 70,143.58 is: 96,765.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.98 : 109,271.75 = 70,143.58 : x
  2. Step 2: Convert to fraction form
    79,208.98/109,271.75 = 70,143.58/x
  3. Step 3: Cross multiply
    79,208.98x = 109,271.75 × 70,143.58
  4. Step 4: Simplify right side
    79,208.98x = 7,664,711,737.87
  5. Step 5: Solve for x
    x = 7,664,711,737.87/79,208.98
  6. Step 6: Final answer
    x = 96,765.69

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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.