Home / 140,148.09-193,401.66-76,486.34

Finding the Fourth Proportional to 140,148.09, 193,401.66 and 76,486.34

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Solution

The fourth proportional to 140,148.09, 193,401.66 and 76,486.34 is: 105,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,148.09 : 193,401.66 = 76,486.34 : x
  2. Step 2: Convert to fraction form
    140,148.09/193,401.66 = 76,486.34/x
  3. Step 3: Cross multiply
    140,148.09x = 193,401.66 × 76,486.34
  4. Step 4: Simplify right side
    140,148.09x = 14,792,585,123.32
  5. Step 5: Solve for x
    x = 14,792,585,123.32/140,148.09
  6. Step 6: Final answer
    x = 105,549.67

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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.