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Finding the Fourth Proportional to 121,319,246.40, 181,978,869.60 and 35,060,467.20

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Solution

The fourth proportional to 121,319,246.40, 181,978,869.60 and 35,060,467.20 is: 52,590,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,319,246.40 : 181,978,869.60 = 35,060,467.20 : x
  2. Step 2: Convert to fraction form
    121,319,246.40/181,978,869.60 = 35,060,467.20/x
  3. Step 3: Cross multiply
    121,319,246.40x = 181,978,869.60 × 35,060,467.20
  4. Step 4: Simplify right side
    121,319,246.40x = 6,380,264,188,703,877
  5. Step 5: Solve for x
    x = 6,380,264,188,703,877/121,319,246.40
  6. Step 6: Final answer
    x = 52,590,700.80

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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.