Finding the Fourth Proportional to 153,840,931.36, 212,300,387.84 and 84,226,293.79
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Solution
The fourth proportional to 153,840,931.36, 212,300,387.84 and 84,226,293.79 is: 116,232,232.08
Step by Step Solution
- Step 1: Write the proportion equation
153,840,931.36 : 212,300,387.84 = 84,226,293.79 : x - Step 2: Convert to fraction form
153,840,931.36/212,300,387.84 = 84,226,293.79/x - Step 3: Cross multiply
153,840,931.36x = 212,300,387.84 × 84,226,293.79 - Step 4: Simplify right side
153,840,931.36x = 17,881,274,837,622,598 - Step 5: Solve for x
x = 17,881,274,837,622,598/153,840,931.36 - Step 6: Final answer
x = 116,232,232.08
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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.