Home / 138,684,573.20-208,026,859.80-70,660,125.20

Finding the Fourth Proportional to 138,684,573.20, 208,026,859.80 and 70,660,125.20

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Solution

The fourth proportional to 138,684,573.20, 208,026,859.80 and 70,660,125.20 is: 105,990,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,684,573.20 : 208,026,859.80 = 70,660,125.20 : x
  2. Step 2: Convert to fraction form
    138,684,573.20/208,026,859.80 = 70,660,125.20/x
  3. Step 3: Cross multiply
    138,684,573.20x = 208,026,859.80 × 70,660,125.20
  4. Step 4: Simplify right side
    138,684,573.20x = 14,699,203,958,430,848
  5. Step 5: Solve for x
    x = 14,699,203,958,430,848/138,684,573.20
  6. Step 6: Final answer
    x = 105,990,187.80

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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.