Home / 121,436,835.78-167,586,794.10-66,432,692.28

Finding the Fourth Proportional to 121,436,835.78, 167,586,794.10 and 66,432,692.28

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Solution

The fourth proportional to 121,436,835.78, 167,586,794.10 and 66,432,692.28 is: 91,679,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436,835.78 : 167,586,794.10 = 66,432,692.28 : x
  2. Step 2: Convert to fraction form
    121,436,835.78/167,586,794.10 = 66,432,692.28/x
  3. Step 3: Cross multiply
    121,436,835.78x = 167,586,794.10 × 66,432,692.28
  4. Step 4: Simplify right side
    121,436,835.78x = 11,133,241,922,637,020
  5. Step 5: Solve for x
    x = 11,133,241,922,637,020/121,436,835.78
  6. Step 6: Final answer
    x = 91,679,282.08

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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.