Finding the Fourth Proportional to 153,463,729.60, 211,873,797.12 and 99,869,459.68
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Solution
The fourth proportional to 153,463,729.60, 211,873,797.12 and 99,869,459.68 is: 137,880,929.22
Step by Step Solution
- Step 1: Write the proportion equation
153,463,729.60 : 211,873,797.12 = 99,869,459.68 : x - Step 2: Convert to fraction form
153,463,729.60/211,873,797.12 = 99,869,459.68/x - Step 3: Cross multiply
153,463,729.60x = 211,873,797.12 × 99,869,459.68 - Step 4: Simplify right side
153,463,729.60x = 21,159,721,638,724,344 - Step 5: Solve for x
x = 21,159,721,638,724,344/153,463,729.60 - Step 6: Final answer
x = 137,880,929.22
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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.