Home / 128,901,698.20-193,069,112.10-68,246,565.40

Finding the Fourth Proportional to 128,901,698.20, 193,069,112.10 and 68,246,565.40

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Solution

The fourth proportional to 128,901,698.20, 193,069,112.10 and 68,246,565.40 is: 102,219,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,901,698.20 : 193,069,112.10 = 68,246,565.40 : x
  2. Step 2: Convert to fraction form
    128,901,698.20/193,069,112.10 = 68,246,565.40/x
  3. Step 3: Cross multiply
    128,901,698.20x = 193,069,112.10 × 68,246,565.40
  4. Step 4: Simplify right side
    128,901,698.20x = 13,176,303,785,652,582
  5. Step 5: Solve for x
    x = 13,176,303,785,652,582/128,901,698.20
  6. Step 6: Final answer
    x = 102,219,784.30

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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.