Home / 138,672,056.80-208,008,085.20-98,361,272.80

Finding the Fourth Proportional to 138,672,056.80, 208,008,085.20 and 98,361,272.80

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Solution

The fourth proportional to 138,672,056.80, 208,008,085.20 and 98,361,272.80 is: 147,541,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,672,056.80 : 208,008,085.20 = 98,361,272.80 : x
  2. Step 2: Convert to fraction form
    138,672,056.80/208,008,085.20 = 98,361,272.80/x
  3. Step 3: Cross multiply
    138,672,056.80x = 208,008,085.20 × 98,361,272.80
  4. Step 4: Simplify right side
    138,672,056.80x = 20,459,940,012,962,840
  5. Step 5: Solve for x
    x = 20,459,940,012,962,840/138,672,056.80
  6. Step 6: Final answer
    x = 147,541,909.20

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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.