Finding the Fourth Proportional to 128,633,406.10, 192,908,643.62 and 42,351,269.74
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Solution
The fourth proportional to 128,633,406.10, 192,908,643.62 and 42,351,269.74 is: 63,513,252.50
Step by Step Solution
- Step 1: Write the proportion equation
128,633,406.10 : 192,908,643.62 = 42,351,269.74 : x - Step 2: Convert to fraction form
128,633,406.10/192,908,643.62 = 42,351,269.74/x - Step 3: Cross multiply
128,633,406.10x = 192,908,643.62 × 42,351,269.74 - Step 4: Simplify right side
128,633,406.10x = 8,169,926,001,128,151 - Step 5: Solve for x
x = 8,169,926,001,128,151/128,633,406.10 - Step 6: Final answer
x = 63,513,252.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.