Home / 142,385,013.78-196,522,052.16-86,648,392.04

Finding the Fourth Proportional to 142,385,013.78, 196,522,052.16 and 86,648,392.04

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Solution

The fourth proportional to 142,385,013.78, 196,522,052.16 and 86,648,392.04 is: 119,593,483.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,385,013.78 : 196,522,052.16 = 86,648,392.04 : x
  2. Step 2: Convert to fraction form
    142,385,013.78/196,522,052.16 = 86,648,392.04/x
  3. Step 3: Cross multiply
    142,385,013.78x = 196,522,052.16 × 86,648,392.04
  4. Step 4: Simplify right side
    142,385,013.78x = 17,028,319,819,407,328
  5. Step 5: Solve for x
    x = 17,028,319,819,407,328/142,385,013.78
  6. Step 6: Final answer
    x = 119,593,483.67

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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.