Home / 128,816,898.70-193,225,348.05-103,307,730.70

Finding the Fourth Proportional to 128,816,898.70, 193,225,348.05 and 103,307,730.70

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Solution

The fourth proportional to 128,816,898.70, 193,225,348.05 and 103,307,730.70 is: 154,961,596.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,816,898.70 : 193,225,348.05 = 103,307,730.70 : x
  2. Step 2: Convert to fraction form
    128,816,898.70/193,225,348.05 = 103,307,730.70/x
  3. Step 3: Cross multiply
    128,816,898.70x = 193,225,348.05 × 103,307,730.70
  4. Step 4: Simplify right side
    128,816,898.70x = 19,961,672,220,763,172
  5. Step 5: Solve for x
    x = 19,961,672,220,763,172/128,816,898.70
  6. Step 6: Final answer
    x = 154,961,596.05

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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.