Home / 210,006,009.90-315,009,014.85-137,446,598.70

Finding the Fourth Proportional to 210,006,009.90, 315,009,014.85 and 137,446,598.70

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Solution

The fourth proportional to 210,006,009.90, 315,009,014.85 and 137,446,598.70 is: 206,169,898.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006,009.90 : 315,009,014.85 = 137,446,598.70 : x
  2. Step 2: Convert to fraction form
    210,006,009.90/315,009,014.85 = 137,446,598.70/x
  3. Step 3: Cross multiply
    210,006,009.90x = 315,009,014.85 × 137,446,598.70
  4. Step 4: Simplify right side
    210,006,009.90x = 43,296,917,650,970,288
  5. Step 5: Solve for x
    x = 43,296,917,650,970,288/210,006,009.90
  6. Step 6: Final answer
    x = 206,169,898.05

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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.