Finding the Fourth Proportional to 128,461,756.23, 177,276,776.51 and 69,724,421.16
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Solution
The fourth proportional to 128,461,756.23, 177,276,776.51 and 69,724,421.16 is: 96,219,458.54
Step by Step Solution
- Step 1: Write the proportion equation
128,461,756.23 : 177,276,776.51 = 69,724,421.16 : x - Step 2: Convert to fraction form
128,461,756.23/177,276,776.51 = 69,724,421.16/x - Step 3: Cross multiply
128,461,756.23x = 177,276,776.51 × 69,724,421.16 - Step 4: Simplify right side
128,461,756.23x = 12,360,520,626,921,812 - Step 5: Solve for x
x = 12,360,520,626,921,812/128,461,756.23 - Step 6: Final answer
x = 96,219,458.54
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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.