Home / 81,430,923.40-122,146,385.10-68,676,339.40

Finding the Fourth Proportional to 81,430,923.40, 122,146,385.10 and 68,676,339.40

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Solution

The fourth proportional to 81,430,923.40, 122,146,385.10 and 68,676,339.40 is: 103,014,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430,923.40 : 122,146,385.10 = 68,676,339.40 : x
  2. Step 2: Convert to fraction form
    81,430,923.40/122,146,385.10 = 68,676,339.40/x
  3. Step 3: Cross multiply
    81,430,923.40x = 122,146,385.10 × 68,676,339.40
  4. Step 4: Simplify right side
    81,430,923.40x = 8,388,566,599,610,703
  5. Step 5: Solve for x
    x = 8,388,566,599,610,703/81,430,923.40
  6. Step 6: Final answer
    x = 103,014,509.10

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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.