Home / 156,443,021.28-215,902,281.36-103,427,619.28

Finding the Fourth Proportional to 156,443,021.28, 215,902,281.36 and 103,427,619.28

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Solution

The fourth proportional to 156,443,021.28, 215,902,281.36 and 103,427,619.28 is: 142,737,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,443,021.28 : 215,902,281.36 = 103,427,619.28 : x
  2. Step 2: Convert to fraction form
    156,443,021.28/215,902,281.36 = 103,427,619.28/x
  3. Step 3: Cross multiply
    156,443,021.28x = 215,902,281.36 × 103,427,619.28
  4. Step 4: Simplify right side
    156,443,021.28x = 22,330,258,958,185,524
  5. Step 5: Solve for x
    x = 22,330,258,958,185,524/156,443,021.28
  6. Step 6: Final answer
    x = 142,737,328.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.