Home / 129,000,599.60-178,059,728.66-87,771,406.82

Finding the Fourth Proportional to 129,000,599.60, 178,059,728.66 and 87,771,406.82

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Solution

The fourth proportional to 129,000,599.60, 178,059,728.66 and 87,771,406.82 is: 121,151,009.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,000,599.60 : 178,059,728.66 = 87,771,406.82 : x
  2. Step 2: Convert to fraction form
    129,000,599.60/178,059,728.66 = 87,771,406.82/x
  3. Step 3: Cross multiply
    129,000,599.60x = 178,059,728.66 × 87,771,406.82
  4. Step 4: Simplify right side
    129,000,599.60x = 15,628,552,881,146,518
  5. Step 5: Solve for x
    x = 15,628,552,881,146,518/129,000,599.60
  6. Step 6: Final answer
    x = 121,151,009.61

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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.