Home / 128,736,601.80-193,104,902.70-74,317,043.40

Finding the Fourth Proportional to 128,736,601.80, 193,104,902.70 and 74,317,043.40

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Solution

The fourth proportional to 128,736,601.80, 193,104,902.70 and 74,317,043.40 is: 111,475,565.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,601.80 : 193,104,902.70 = 74,317,043.40 : x
  2. Step 2: Convert to fraction form
    128,736,601.80/193,104,902.70 = 74,317,043.40/x
  3. Step 3: Cross multiply
    128,736,601.80x = 193,104,902.70 × 74,317,043.40
  4. Step 4: Simplify right side
    128,736,601.80x = 14,350,985,434,708,678
  5. Step 5: Solve for x
    x = 14,350,985,434,708,678/128,736,601.80
  6. Step 6: Final answer
    x = 111,475,565.10

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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.