Home / 138,024,006.30-207,036,009.45-137,128,211.10

Finding the Fourth Proportional to 138,024,006.30, 207,036,009.45 and 137,128,211.10

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Solution

The fourth proportional to 138,024,006.30, 207,036,009.45 and 137,128,211.10 is: 205,692,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,024,006.30 : 207,036,009.45 = 137,128,211.10 : x
  2. Step 2: Convert to fraction form
    138,024,006.30/207,036,009.45 = 137,128,211.10/x
  3. Step 3: Cross multiply
    138,024,006.30x = 207,036,009.45 × 137,128,211.10
  4. Step 4: Simplify right side
    138,024,006.30x = 28,390,477,609,161,192
  5. Step 5: Solve for x
    x = 28,390,477,609,161,192/138,024,006.30
  6. Step 6: Final answer
    x = 205,692,316.65

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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.