Home / 139,968,139.10-209,952,208.65-105,200,087.90

Finding the Fourth Proportional to 139,968,139.10, 209,952,208.65 and 105,200,087.90

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Solution

The fourth proportional to 139,968,139.10, 209,952,208.65 and 105,200,087.90 is: 157,800,131.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,139.10 : 209,952,208.65 = 105,200,087.90 : x
  2. Step 2: Convert to fraction form
    139,968,139.10/209,952,208.65 = 105,200,087.90/x
  3. Step 3: Cross multiply
    139,968,139.10x = 209,952,208.65 × 105,200,087.90
  4. Step 4: Simplify right side
    139,968,139.10x = 22,086,990,804,779,144
  5. Step 5: Solve for x
    x = 22,086,990,804,779,144/139,968,139.10
  6. Step 6: Final answer
    x = 157,800,131.85

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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.