Home / 128,774,487.20-193,161,730.80-42,526,205.60

Finding the Fourth Proportional to 128,774,487.20, 193,161,730.80 and 42,526,205.60

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Solution

The fourth proportional to 128,774,487.20, 193,161,730.80 and 42,526,205.60 is: 63,789,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,774,487.20 : 193,161,730.80 = 42,526,205.60 : x
  2. Step 2: Convert to fraction form
    128,774,487.20/193,161,730.80 = 42,526,205.60/x
  3. Step 3: Cross multiply
    128,774,487.20x = 193,161,730.80 × 42,526,205.60
  4. Step 4: Simplify right side
    128,774,487.20x = 8,214,435,478,052,653
  5. Step 5: Solve for x
    x = 8,214,435,478,052,653/128,774,487.20
  6. Step 6: Final answer
    x = 63,789,308.40

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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.