Finding the Fourth Proportional to 135,158,685.12, 186,522,920.10 and 76,420,089.06
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Solution
The fourth proportional to 135,158,685.12, 186,522,920.10 and 76,420,089.06 is: 105,461,947.58
Step by Step Solution
- Step 1: Write the proportion equation
135,158,685.12 : 186,522,920.10 = 76,420,089.06 : x - Step 2: Convert to fraction form
135,158,685.12/186,522,920.10 = 76,420,089.06/x - Step 3: Cross multiply
135,158,685.12x = 186,522,920.10 × 76,420,089.06 - Step 4: Simplify right side
135,158,685.12x = 14,254,098,165,773,264 - Step 5: Solve for x
x = 14,254,098,165,773,264/135,158,685.12 - Step 6: Final answer
x = 105,461,947.58
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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.