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Finding the Fourth Proportional to 138,879,803.48, 208,354,298.09 and 98,018,978.04

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Solution

The fourth proportional to 138,879,803.48, 208,354,298.09 and 98,018,978.04 is: 147,052,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,879,803.48 : 208,354,298.09 = 98,018,978.04 : x
  2. Step 2: Convert to fraction form
    138,879,803.48/208,354,298.09 = 98,018,978.04/x
  3. Step 3: Cross multiply
    138,879,803.48x = 208,354,298.09 × 98,018,978.04
  4. Step 4: Simplify right side
    138,879,803.48x = 20,422,675,368,533,232
  5. Step 5: Solve for x
    x = 20,422,675,368,533,232/138,879,803.48
  6. Step 6: Final answer
    x = 147,052,882.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.