Home / 154,571,139.23-213,309,820.03-84,006,749.07

Finding the Fourth Proportional to 154,571,139.23, 213,309,820.03 and 84,006,749.07

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Solution

The fourth proportional to 154,571,139.23, 213,309,820.03 and 84,006,749.07 is: 115,930,209.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,571,139.23 : 213,309,820.03 = 84,006,749.07 : x
  2. Step 2: Convert to fraction form
    154,571,139.23/213,309,820.03 = 84,006,749.07/x
  3. Step 3: Cross multiply
    154,571,139.23x = 213,309,820.03 × 84,006,749.07
  4. Step 4: Simplify right side
    154,571,139.23x = 17,919,464,525,427,068
  5. Step 5: Solve for x
    x = 17,919,464,525,427,068/154,571,139.23
  6. Step 6: Final answer
    x = 115,930,209.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.