Home / 120,371,657.42-180,298,059.06-81,295,232.39

Finding the Fourth Proportional to 120,371,657.42, 180,298,059.06 and 81,295,232.39

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Solution

The fourth proportional to 120,371,657.42, 180,298,059.06 and 81,295,232.39 is: 121,767,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,371,657.42 : 180,298,059.06 = 81,295,232.39 : x
  2. Step 2: Convert to fraction form
    120,371,657.42/180,298,059.06 = 81,295,232.39/x
  3. Step 3: Cross multiply
    120,371,657.42x = 180,298,059.06 × 81,295,232.39
  4. Step 4: Simplify right side
    120,371,657.42x = 14,657,372,610,342,170
  5. Step 5: Solve for x
    x = 14,657,372,610,342,170/120,371,657.42
  6. Step 6: Final answer
    x = 121,767,639.70

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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.