Home / 138,663,475.62-191,353,241.04-76,782,485.58

Finding the Fourth Proportional to 138,663,475.62, 191,353,241.04 and 76,782,485.58

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Solution

The fourth proportional to 138,663,475.62, 191,353,241.04 and 76,782,485.58 is: 105,958,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663,475.62 : 191,353,241.04 = 76,782,485.58 : x
  2. Step 2: Convert to fraction form
    138,663,475.62/191,353,241.04 = 76,782,485.58/x
  3. Step 3: Cross multiply
    138,663,475.62x = 191,353,241.04 × 76,782,485.58
  4. Step 4: Simplify right side
    138,663,475.62x = 14,692,577,470,840,064
  5. Step 5: Solve for x
    x = 14,692,577,470,840,064/138,663,475.62
  6. Step 6: Final answer
    x = 105,958,525.89

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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.