Home / 128,185,780.64-176,896,137.94-69,449,905.58

Finding the Fourth Proportional to 128,185,780.64, 176,896,137.94 and 69,449,905.58

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Solution

The fourth proportional to 128,185,780.64, 176,896,137.94 and 69,449,905.58 is: 95,840,740.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185,780.64 : 176,896,137.94 = 69,449,905.58 : x
  2. Step 2: Convert to fraction form
    128,185,780.64/176,896,137.94 = 69,449,905.58/x
  3. Step 3: Cross multiply
    128,185,780.64x = 176,896,137.94 × 69,449,905.58
  4. Step 4: Simplify right side
    128,185,780.64x = 12,285,420,076,341,550
  5. Step 5: Solve for x
    x = 12,285,420,076,341,550/128,185,780.64
  6. Step 6: Final answer
    x = 95,840,740.02

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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.