Home / 128,574,424.05-177,434,139.38-75,662,826.45

Finding the Fourth Proportional to 128,574,424.05, 177,434,139.38 and 75,662,826.45

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Solution

The fourth proportional to 128,574,424.05, 177,434,139.38 and 75,662,826.45 is: 104,415,544.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574,424.05 : 177,434,139.38 = 75,662,826.45 : x
  2. Step 2: Convert to fraction form
    128,574,424.05/177,434,139.38 = 75,662,826.45/x
  3. Step 3: Cross multiply
    128,574,424.05x = 177,434,139.38 × 75,662,826.45
  4. Step 4: Simplify right side
    128,574,424.05x = 13,425,168,493,835,736
  5. Step 5: Solve for x
    x = 13,425,168,493,835,736/128,574,424.05
  6. Step 6: Final answer
    x = 104,415,544.48

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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.