Finding the Fourth Proportional to 128,124,686.24, 176,811,124.04 and 69,385,988.72
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Solution
The fourth proportional to 128,124,686.24, 176,811,124.04 and 69,385,988.72 is: 95,752,153.77
Step by Step Solution
- Step 1: Write the proportion equation
128,124,686.24 : 176,811,124.04 = 69,385,988.72 : x - Step 2: Convert to fraction form
128,124,686.24/176,811,124.04 = 69,385,988.72/x - Step 3: Cross multiply
128,124,686.24x = 176,811,124.04 × 69,385,988.72 - Step 4: Simplify right side
128,124,686.24x = 12,268,214,658,209,960 - Step 5: Solve for x
x = 12,268,214,658,209,960/128,124,686.24 - Step 6: Final answer
x = 95,752,153.77
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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.