Home / 154,971,749.80-213,861,007.38-85,357,132.84

Finding the Fourth Proportional to 154,971,749.80, 213,861,007.38 and 85,357,132.84

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Solution

The fourth proportional to 154,971,749.80, 213,861,007.38 and 85,357,132.84 is: 117,792,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,971,749.80 : 213,861,007.38 = 85,357,132.84 : x
  2. Step 2: Convert to fraction form
    154,971,749.80/213,861,007.38 = 85,357,132.84/x
  3. Step 3: Cross multiply
    154,971,749.80x = 213,861,007.38 × 85,357,132.84
  4. Step 4: Simplify right side
    154,971,749.80x = 18,254,562,416,230,880
  5. Step 5: Solve for x
    x = 18,254,562,416,230,880/154,971,749.80
  6. Step 6: Final answer
    x = 117,792,839.27

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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.