Home / 120,669,428.08-166,607,123.16-112,959,990.64

Finding the Fourth Proportional to 120,669,428.08, 166,607,123.16 and 112,959,990.64

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Solution

The fourth proportional to 120,669,428.08, 166,607,123.16 and 112,959,990.64 is: 155,962,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,669,428.08 : 166,607,123.16 = 112,959,990.64 : x
  2. Step 2: Convert to fraction form
    120,669,428.08/166,607,123.16 = 112,959,990.64/x
  3. Step 3: Cross multiply
    120,669,428.08x = 166,607,123.16 × 112,959,990.64
  4. Step 4: Simplify right side
    120,669,428.08x = 18,819,939,072,710,928
  5. Step 5: Solve for x
    x = 18,819,939,072,710,928/120,669,428.08
  6. Step 6: Final answer
    x = 155,962,776.75

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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.