Home / 128,244.06-176,971.31-70,880.42

Finding the Fourth Proportional to 128,244.06, 176,971.31 and 70,880.42

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Solution

The fourth proportional to 128,244.06, 176,971.31 and 70,880.42 is: 97,811.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,244.06 : 176,971.31 = 70,880.42 : x
  2. Step 2: Convert to fraction form
    128,244.06/176,971.31 = 70,880.42/x
  3. Step 3: Cross multiply
    128,244.06x = 176,971.31 × 70,880.42
  4. Step 4: Simplify right side
    128,244.06x = 12,543,800,780.75
  5. Step 5: Solve for x
    x = 12,543,800,780.75/128,244.06
  6. Step 6: Final answer
    x = 97,811.94

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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.