Finding the Fourth Proportional to 121,489,703.91, 167,655,683.12 and 68,577,549.23
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Solution
The fourth proportional to 121,489,703.91, 167,655,683.12 and 68,577,549.23 is: 94,636,956.82
Step by Step Solution
- Step 1: Write the proportion equation
121,489,703.91 : 167,655,683.12 = 68,577,549.23 : x - Step 2: Convert to fraction form
121,489,703.91/167,655,683.12 = 68,577,549.23/x - Step 3: Cross multiply
121,489,703.91x = 167,655,683.12 × 68,577,549.23 - Step 4: Simplify right side
121,489,703.91x = 11,497,415,862,927,332 - Step 5: Solve for x
x = 11,497,415,862,927,332/121,489,703.91 - Step 6: Final answer
x = 94,636,956.82
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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.