Home / 139,968,134.10-209,952,201.15-78,746,130.90

Finding the Fourth Proportional to 139,968,134.10, 209,952,201.15 and 78,746,130.90

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Solution

The fourth proportional to 139,968,134.10, 209,952,201.15 and 78,746,130.90 is: 118,119,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,134.10 : 209,952,201.15 = 78,746,130.90 : x
  2. Step 2: Convert to fraction form
    139,968,134.10/209,952,201.15 = 78,746,130.90/x
  3. Step 3: Cross multiply
    139,968,134.10x = 209,952,201.15 × 78,746,130.90
  4. Step 4: Simplify right side
    139,968,134.10x = 16,532,923,514,501,032
  5. Step 5: Solve for x
    x = 16,532,923,514,501,032/139,968,134.10
  6. Step 6: Final answer
    x = 118,119,196.35

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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.