Finding the Fourth Proportional to 128,035,956.76, 176,670,814.06 and 71,513,737.99
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Solution
The fourth proportional to 128,035,956.76, 176,670,814.06 and 71,513,737.99 is: 98,678,454.29
Step by Step Solution
- Step 1: Write the proportion equation
128,035,956.76 : 176,670,814.06 = 71,513,737.99 : x - Step 2: Convert to fraction form
128,035,956.76/176,670,814.06 = 71,513,737.99/x - Step 3: Cross multiply
128,035,956.76x = 176,670,814.06 × 71,513,737.99 - Step 4: Simplify right side
128,035,956.76x = 12,634,390,306,814,562 - Step 5: Solve for x
x = 12,634,390,306,814,562/128,035,956.76 - Step 6: Final answer
x = 98,678,454.29
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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.