Home / 128,555,587.11-177,417,651.34-72,810,924.06

Finding the Fourth Proportional to 128,555,587.11, 177,417,651.34 and 72,810,924.06

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Solution

The fourth proportional to 128,555,587.11, 177,417,651.34 and 72,810,924.06 is: 100,485,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,555,587.11 : 177,417,651.34 = 72,810,924.06 : x
  2. Step 2: Convert to fraction form
    128,555,587.11/177,417,651.34 = 72,810,924.06/x
  3. Step 3: Cross multiply
    128,555,587.11x = 177,417,651.34 × 72,810,924.06
  4. Step 4: Simplify right side
    128,555,587.11x = 12,917,943,139,376,628
  5. Step 5: Solve for x
    x = 12,917,943,139,376,628/128,555,587.11
  6. Step 6: Final answer
    x = 100,485,272.01

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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.