Home / 156,959,257.78-216,602,056.87-86,393,359.27

Finding the Fourth Proportional to 156,959,257.78, 216,602,056.87 and 86,393,359.27

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Solution

The fourth proportional to 156,959,257.78, 216,602,056.87 and 86,393,359.27 is: 119,221,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,959,257.78 : 216,602,056.87 = 86,393,359.27 : x
  2. Step 2: Convert to fraction form
    156,959,257.78/216,602,056.87 = 86,393,359.27/x
  3. Step 3: Cross multiply
    156,959,257.78x = 216,602,056.87 × 86,393,359.27
  4. Step 4: Simplify right side
    156,959,257.78x = 18,712,979,317,790,880
  5. Step 5: Solve for x
    x = 18,712,979,317,790,880/156,959,257.78
  6. Step 6: Final answer
    x = 119,221,889.70

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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.