Finding the Fourth Proportional to 129,257,616.48, 178,369,282.08 and 70,516,786.80
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Solution
The fourth proportional to 129,257,616.48, 178,369,282.08 and 70,516,786.80 is: 97,309,767.72
Step by Step Solution
- Step 1: Write the proportion equation
129,257,616.48 : 178,369,282.08 = 70,516,786.80 : x - Step 2: Convert to fraction form
129,257,616.48/178,369,282.08 = 70,516,786.80/x - Step 3: Cross multiply
129,257,616.48x = 178,369,282.08 × 70,516,786.80 - Step 4: Simplify right side
129,257,616.48x = 12,578,028,636,104,420 - Step 5: Solve for x
x = 12,578,028,636,104,420/129,257,616.48 - Step 6: Final answer
x = 97,309,767.72
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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.