Home / 128,775,095.20-193,162,642.80-42,526,813.60

Finding the Fourth Proportional to 128,775,095.20, 193,162,642.80 and 42,526,813.60

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Solution

The fourth proportional to 128,775,095.20, 193,162,642.80 and 42,526,813.60 is: 63,790,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,775,095.20 : 193,162,642.80 = 42,526,813.60 : x
  2. Step 2: Convert to fraction form
    128,775,095.20/193,162,642.80 = 42,526,813.60/x
  3. Step 3: Cross multiply
    128,775,095.20x = 193,162,642.80 × 42,526,813.60
  4. Step 4: Simplify right side
    128,775,095.20x = 8,214,591,704,838,983
  5. Step 5: Solve for x
    x = 8,214,591,704,838,983/128,775,095.20
  6. Step 6: Final answer
    x = 63,790,220.40

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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.