Finding the Fourth Proportional to 147,652,804.80, 221,479,207.20 and 78,778,051.20
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Solution
The fourth proportional to 147,652,804.80, 221,479,207.20 and 78,778,051.20 is: 118,167,076.80
Step by Step Solution
- Step 1: Write the proportion equation
147,652,804.80 : 221,479,207.20 = 78,778,051.20 : x - Step 2: Convert to fraction form
147,652,804.80/221,479,207.20 = 78,778,051.20/x - Step 3: Cross multiply
147,652,804.80x = 221,479,207.20 × 78,778,051.20 - Step 4: Simplify right side
147,652,804.80x = 17,447,700,324,537,008 - Step 5: Solve for x
x = 17,447,700,324,537,008/147,652,804.80 - Step 6: Final answer
x = 118,167,076.80
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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.