Finding the Fourth Proportional to 117,210,420.80, 175,815,631.20 and 76,844,340.80
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Solution
The fourth proportional to 117,210,420.80, 175,815,631.20 and 76,844,340.80 is: 115,266,511.20
Step by Step Solution
- Step 1: Write the proportion equation
117,210,420.80 : 175,815,631.20 = 76,844,340.80 : x - Step 2: Convert to fraction form
117,210,420.80/175,815,631.20 = 76,844,340.80/x - Step 3: Cross multiply
117,210,420.80x = 175,815,631.20 × 76,844,340.80 - Step 4: Simplify right side
117,210,420.80x = 13,510,436,281,899,912 - Step 5: Solve for x
x = 13,510,436,281,899,912/117,210,420.80 - Step 6: Final answer
x = 115,266,511.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.