Finding the Fourth Proportional to 122,213,378.14, 168,658,895.79 and 70,012,502.08
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Solution
The fourth proportional to 122,213,378.14, 168,658,895.79 and 70,012,502.08 is: 96,619,792.95
Step by Step Solution
- Step 1: Write the proportion equation
122,213,378.14 : 168,658,895.79 = 70,012,502.08 : x - Step 2: Convert to fraction form
122,213,378.14/168,658,895.79 = 70,012,502.08/x - Step 3: Cross multiply
122,213,378.14x = 168,658,895.79 × 70,012,502.08 - Step 4: Simplify right side
122,213,378.14x = 11,808,231,291,886,230 - Step 5: Solve for x
x = 11,808,231,291,886,230/122,213,378.14 - Step 6: Final answer
x = 96,619,792.95
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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.