Home / 142,992,738.57-197,324,168.16-81,111,748.53

Finding the Fourth Proportional to 142,992,738.57, 197,324,168.16 and 81,111,748.53

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Solution

The fourth proportional to 142,992,738.57, 197,324,168.16 and 81,111,748.53 is: 111,930,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,738.57 : 197,324,168.16 = 81,111,748.53 : x
  2. Step 2: Convert to fraction form
    142,992,738.57/197,324,168.16 = 81,111,748.53/x
  3. Step 3: Cross multiply
    142,992,738.57x = 197,324,168.16 × 81,111,748.53
  4. Step 4: Simplify right side
    142,992,738.57x = 16,005,308,306,685,352
  5. Step 5: Solve for x
    x = 16,005,308,306,685,352/142,992,738.57
  6. Step 6: Final answer
    x = 111,930,916.68

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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.