Home / 108,172,152.87-149,329,045.44-72,470,068.53

Finding the Fourth Proportional to 108,172,152.87, 149,329,045.44 and 72,470,068.53

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Solution

The fourth proportional to 108,172,152.87, 149,329,045.44 and 72,470,068.53 is: 100,043,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,172,152.87 : 149,329,045.44 = 72,470,068.53 : x
  2. Step 2: Convert to fraction form
    108,172,152.87/149,329,045.44 = 72,470,068.53/x
  3. Step 3: Cross multiply
    108,172,152.87x = 149,329,045.44 × 72,470,068.53
  4. Step 4: Simplify right side
    108,172,152.87x = 10,821,886,156,556,284
  5. Step 5: Solve for x
    x = 10,821,886,156,556,284/108,172,152.87
  6. Step 6: Final answer
    x = 100,043,179.96

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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.