Finding the Fourth Proportional to 153,687,964.35, 212,088,756.74 and 83,123,653.35
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Solution
The fourth proportional to 153,687,964.35, 212,088,756.74 and 83,123,653.35 is: 114,710,298.68
Step by Step Solution
- Step 1: Write the proportion equation
153,687,964.35 : 212,088,756.74 = 83,123,653.35 : x - Step 2: Convert to fraction form
153,687,964.35/212,088,756.74 = 83,123,653.35/x - Step 3: Cross multiply
153,687,964.35x = 212,088,756.74 × 83,123,653.35 - Step 4: Simplify right side
153,687,964.35x = 17,629,592,294,272,618 - Step 5: Solve for x
x = 17,629,592,294,272,618/153,687,964.35 - Step 6: Final answer
x = 114,710,298.68
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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.