Home / 102,981,765.66-142,152,128.36-68,185,666.18

Finding the Fourth Proportional to 102,981,765.66, 142,152,128.36 and 68,185,666.18

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Solution

The fourth proportional to 102,981,765.66, 142,152,128.36 and 68,185,666.18 is: 94,120,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,981,765.66 : 142,152,128.36 = 68,185,666.18 : x
  2. Step 2: Convert to fraction form
    102,981,765.66/142,152,128.36 = 68,185,666.18/x
  3. Step 3: Cross multiply
    102,981,765.66x = 142,152,128.36 × 68,185,666.18
  4. Step 4: Simplify right side
    102,981,765.66x = 9,692,737,571,131,472
  5. Step 5: Solve for x
    x = 9,692,737,571,131,472/102,981,765.66
  6. Step 6: Final answer
    x = 94,120,910.72

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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.