Finding the Fourth Proportional to 157,420,811.27, 217,247,289.98 and 86,860,998.69
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Solution
The fourth proportional to 157,420,811.27, 217,247,289.98 and 86,860,998.69 is: 119,871,803.60
Step by Step Solution
- Step 1: Write the proportion equation
157,420,811.27 : 217,247,289.98 = 86,860,998.69 : x - Step 2: Convert to fraction form
157,420,811.27/217,247,289.98 = 86,860,998.69/x - Step 3: Cross multiply
157,420,811.27x = 217,247,289.98 × 86,860,998.69 - Step 4: Simplify right side
157,420,811.27x = 18,870,316,569,924,524 - Step 5: Solve for x
x = 18,870,316,569,924,524/157,420,811.27 - Step 6: Final answer
x = 119,871,803.60
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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.