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Finding the Fourth Proportional to 139,968,404.10, 209,952,606.15 and 105,200,352.90

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Solution

The fourth proportional to 139,968,404.10, 209,952,606.15 and 105,200,352.90 is: 157,800,529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,404.10 : 209,952,606.15 = 105,200,352.90 : x
  2. Step 2: Convert to fraction form
    139,968,404.10/209,952,606.15 = 105,200,352.90/x
  3. Step 3: Cross multiply
    139,968,404.10x = 209,952,606.15 × 105,200,352.90
  4. Step 4: Simplify right side
    139,968,404.10x = 22,087,088,259,254,712
  5. Step 5: Solve for x
    x = 22,087,088,259,254,712/139,968,404.10
  6. Step 6: Final answer
    x = 157,800,529.35

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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.