Finding the Fourth Proportional to 122,816,985.48, 169,416,389.16 and 79,356,921.48
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Solution
The fourth proportional to 122,816,985.48, 169,416,389.16 and 79,356,921.48 is: 109,466,642.90
Step by Step Solution
- Step 1: Write the proportion equation
122,816,985.48 : 169,416,389.16 = 79,356,921.48 : x - Step 2: Convert to fraction form
122,816,985.48/169,416,389.16 = 79,356,921.48/x - Step 3: Cross multiply
122,816,985.48x = 169,416,389.16 × 79,356,921.48 - Step 4: Simplify right side
122,816,985.48x = 13,444,363,091,995,244 - Step 5: Solve for x
x = 13,444,363,091,995,244/122,816,985.48 - Step 6: Final answer
x = 109,466,642.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.