Home / 128,700,198.80-193,428,211.80-112,072,000.40

Finding the Fourth Proportional to 128,700,198.80, 193,428,211.80 and 112,072,000.40

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Solution

The fourth proportional to 128,700,198.80, 193,428,211.80 and 112,072,000.40 is: 168,437,087.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,700,198.80 : 193,428,211.80 = 112,072,000.40 : x
  2. Step 2: Convert to fraction form
    128,700,198.80/193,428,211.80 = 112,072,000.40/x
  3. Step 3: Cross multiply
    128,700,198.80x = 193,428,211.80 × 112,072,000.40
  4. Step 4: Simplify right side
    128,700,198.80x = 21,677,886,630,220,888
  5. Step 5: Solve for x
    x = 21,677,886,630,220,888/128,700,198.80
  6. Step 6: Final answer
    x = 168,437,087.37

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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.