Home / 128,615,938.20-193,147,856.10-68,149,762.20

Finding the Fourth Proportional to 128,615,938.20, 193,147,856.10 and 68,149,762.20

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Solution

The fourth proportional to 128,615,938.20, 193,147,856.10 and 68,149,762.20 is: 102,343,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,615,938.20 : 193,147,856.10 = 68,149,762.20 : x
  2. Step 2: Convert to fraction form
    128,615,938.20/193,147,856.10 = 68,149,762.20/x
  3. Step 3: Cross multiply
    128,615,938.20x = 193,147,856.10 × 68,149,762.20
  4. Step 4: Simplify right side
    128,615,938.20x = 13,162,980,462,654,820
  5. Step 5: Solve for x
    x = 13,162,980,462,654,820/128,615,938.20
  6. Step 6: Final answer
    x = 102,343,307.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.