Finding the Fourth Proportional to 156,959,278.93, 216,602,085.97 and 86,393,380.44
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Solution
The fourth proportional to 156,959,278.93, 216,602,085.97 and 86,393,380.44 is: 119,221,918.86
Step by Step Solution
- Step 1: Write the proportion equation
156,959,278.93 : 216,602,085.97 = 86,393,380.44 : x - Step 2: Convert to fraction form
156,959,278.93/216,602,085.97 = 86,393,380.44/x - Step 3: Cross multiply
156,959,278.93x = 216,602,085.97 × 86,393,380.44 - Step 4: Simplify right side
156,959,278.93x = 18,712,986,417,303,796 - Step 5: Solve for x
x = 18,712,986,417,303,796/156,959,278.93 - Step 6: Final answer
x = 119,221,918.86
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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.