Home / 113,572,643.40-170,358,965.10-81,324,016.20

Finding the Fourth Proportional to 113,572,643.40, 170,358,965.10 and 81,324,016.20

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Solution

The fourth proportional to 113,572,643.40, 170,358,965.10 and 81,324,016.20 is: 121,986,024.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,572,643.40 : 170,358,965.10 = 81,324,016.20 : x
  2. Step 2: Convert to fraction form
    113,572,643.40/170,358,965.10 = 81,324,016.20/x
  3. Step 3: Cross multiply
    113,572,643.40x = 170,358,965.10 × 81,324,016.20
  4. Step 4: Simplify right side
    113,572,643.40x = 13,854,275,237,607,634
  5. Step 5: Solve for x
    x = 13,854,275,237,607,634/113,572,643.40
  6. Step 6: Final answer
    x = 121,986,024.30

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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.