Home / 143,341,989.13-197,828,738.54-81,471,627.91

Finding the Fourth Proportional to 143,341,989.13, 197,828,738.54 and 81,471,627.91

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Solution

The fourth proportional to 143,341,989.13, 197,828,738.54 and 81,471,627.91 is: 112,440,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341,989.13 : 197,828,738.54 = 81,471,627.91 : x
  2. Step 2: Convert to fraction form
    143,341,989.13/197,828,738.54 = 81,471,627.91/x
  3. Step 3: Cross multiply
    143,341,989.13x = 197,828,738.54 × 81,471,627.91
  4. Step 4: Simplify right side
    143,341,989.13x = 16,117,429,376,235,556
  5. Step 5: Solve for x
    x = 16,117,429,376,235,556/143,341,989.13
  6. Step 6: Final answer
    x = 112,440,391.50

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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.