Home / 128,742,024.20-193,336,985.10-68,275,848.20

Finding the Fourth Proportional to 128,742,024.20, 193,336,985.10 and 68,275,848.20

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Solution

The fourth proportional to 128,742,024.20, 193,336,985.10 and 68,275,848.20 is: 102,532,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,024.20 : 193,336,985.10 = 68,275,848.20 : x
  2. Step 2: Convert to fraction form
    128,742,024.20/193,336,985.10 = 68,275,848.20/x
  3. Step 3: Cross multiply
    128,742,024.20x = 193,336,985.10 × 68,275,848.20
  4. Step 4: Simplify right side
    128,742,024.20x = 13,200,246,646,133,262
  5. Step 5: Solve for x
    x = 13,200,246,646,133,262/128,742,024.20
  6. Step 6: Final answer
    x = 102,532,539.22

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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.