Home / 140,004,006.60-210,006,009.90-91,631,065.80

Finding the Fourth Proportional to 140,004,006.60, 210,006,009.90 and 91,631,065.80

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Solution

The fourth proportional to 140,004,006.60, 210,006,009.90 and 91,631,065.80 is: 137,446,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,004,006.60 : 210,006,009.90 = 91,631,065.80 : x
  2. Step 2: Convert to fraction form
    140,004,006.60/210,006,009.90 = 91,631,065.80/x
  3. Step 3: Cross multiply
    140,004,006.60x = 210,006,009.90 × 91,631,065.80
  4. Step 4: Simplify right side
    140,004,006.60x = 19,243,074,511,542,352
  5. Step 5: Solve for x
    x = 19,243,074,511,542,352/140,004,006.60
  6. Step 6: Final answer
    x = 137,446,598.70

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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.