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Finding the Fourth Proportional to 126,367,999.80, 189,551,999.70 and 58,343,551.80

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Solution

The fourth proportional to 126,367,999.80, 189,551,999.70 and 58,343,551.80 is: 87,515,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,367,999.80 : 189,551,999.70 = 58,343,551.80 : x
  2. Step 2: Convert to fraction form
    126,367,999.80/189,551,999.70 = 58,343,551.80/x
  3. Step 3: Cross multiply
    126,367,999.80x = 189,551,999.70 × 58,343,551.80
  4. Step 4: Simplify right side
    126,367,999.80x = 11,059,136,913,290,534
  5. Step 5: Solve for x
    x = 11,059,136,913,290,534/126,367,999.80
  6. Step 6: Final answer
    x = 87,515,327.70

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1.5x scale

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.