Home / 128,742,037.20-193,337,004.60-68,275,861.20

Finding the Fourth Proportional to 128,742,037.20, 193,337,004.60 and 68,275,861.20

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Solution

The fourth proportional to 128,742,037.20, 193,337,004.60 and 68,275,861.20 is: 102,532,558.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,037.20 : 193,337,004.60 = 68,275,861.20 : x
  2. Step 2: Convert to fraction form
    128,742,037.20/193,337,004.60 = 68,275,861.20/x
  3. Step 3: Cross multiply
    128,742,037.20x = 193,337,004.60 × 68,275,861.20
  4. Step 4: Simplify right side
    128,742,037.20x = 13,200,250,490,893,362
  5. Step 5: Solve for x
    x = 13,200,250,490,893,362/128,742,037.20
  6. Step 6: Final answer
    x = 102,532,558.74

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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.