Home / 128,220,048.76-191,870,336.16-111,007,454.80

Finding the Fourth Proportional to 128,220,048.76, 191,870,336.16 and 111,007,454.80

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Solution

The fourth proportional to 128,220,048.76, 191,870,336.16 and 111,007,454.80 is: 166,113,161.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,220,048.76 : 191,870,336.16 = 111,007,454.80 : x
  2. Step 2: Convert to fraction form
    128,220,048.76/191,870,336.16 = 111,007,454.80/x
  3. Step 3: Cross multiply
    128,220,048.76x = 191,870,336.16 × 111,007,454.80
  4. Step 4: Simplify right side
    128,220,048.76x = 21,299,037,668,742,004
  5. Step 5: Solve for x
    x = 21,299,037,668,742,004/128,220,048.76
  6. Step 6: Final answer
    x = 166,113,161.51

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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.