Home / 137,977,020.73-190,375,538.79-78,433,611.45

Finding the Fourth Proportional to 137,977,020.73, 190,375,538.79 and 78,433,611.45

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Solution

The fourth proportional to 137,977,020.73, 190,375,538.79 and 78,433,611.45 is: 108,219,767.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,977,020.73 : 190,375,538.79 = 78,433,611.45 : x
  2. Step 2: Convert to fraction form
    137,977,020.73/190,375,538.79 = 78,433,611.45/x
  3. Step 3: Cross multiply
    137,977,020.73x = 190,375,538.79 × 78,433,611.45
  4. Step 4: Simplify right side
    137,977,020.73x = 14,931,841,039,039,264
  5. Step 5: Solve for x
    x = 14,931,841,039,039,264/137,977,020.73
  6. Step 6: Final answer
    x = 108,219,767.03

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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.