Home / 136,526,743.12-188,406,921.48-74,647,123.60

Finding the Fourth Proportional to 136,526,743.12, 188,406,921.48 and 74,647,123.60

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Solution

The fourth proportional to 136,526,743.12, 188,406,921.48 and 74,647,123.60 is: 103,013,039.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,526,743.12 : 188,406,921.48 = 74,647,123.60 : x
  2. Step 2: Convert to fraction form
    136,526,743.12/188,406,921.48 = 74,647,123.60/x
  3. Step 3: Cross multiply
    136,526,743.12x = 188,406,921.48 × 74,647,123.60
  4. Step 4: Simplify right side
    136,526,743.12x = 14,064,034,754,813,054
  5. Step 5: Solve for x
    x = 14,064,034,754,813,054/136,526,743.12
  6. Step 6: Final answer
    x = 103,013,039.30

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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.