Home / 139,065,986.40-208,597,942.80-42,021,506.40

Finding the Fourth Proportional to 139,065,986.40, 208,597,942.80 and 42,021,506.40

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Solution

The fourth proportional to 139,065,986.40, 208,597,942.80 and 42,021,506.40 is: 63,031,946.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,065,986.40 : 208,597,942.80 = 42,021,506.40 : x
  2. Step 2: Convert to fraction form
    139,065,986.40/208,597,942.80 = 42,021,506.40/x
  3. Step 3: Cross multiply
    139,065,986.40x = 208,597,942.80 × 42,021,506.40
  4. Step 4: Simplify right side
    139,065,986.40x = 8,765,599,788,397,034
  5. Step 5: Solve for x
    x = 8,765,599,788,397,034/139,065,986.40
  6. Step 6: Final answer
    x = 63,031,946.31

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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.