Home / 120,913,429.52-166,807,987.64-76,836,828.36

Finding the Fourth Proportional to 120,913,429.52, 166,807,987.64 and 76,836,828.36

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Solution

The fourth proportional to 120,913,429.52, 166,807,987.64 and 76,836,828.36 is: 106,001,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,913,429.52 : 166,807,987.64 = 76,836,828.36 : x
  2. Step 2: Convert to fraction form
    120,913,429.52/166,807,987.64 = 76,836,828.36/x
  3. Step 3: Cross multiply
    120,913,429.52x = 166,807,987.64 × 76,836,828.36
  4. Step 4: Simplify right side
    120,913,429.52x = 12,816,996,715,371,680
  5. Step 5: Solve for x
    x = 12,816,996,715,371,680/120,913,429.52
  6. Step 6: Final answer
    x = 106,001,432.32

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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.