Finding the Fourth Proportional to 128,711,377.13, 177,623,721.41 and 69,974,266.59
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Solution
The fourth proportional to 128,711,377.13, 177,623,721.41 and 69,974,266.59 is: 96,565,586.60
Step by Step Solution
- Step 1: Write the proportion equation
128,711,377.13 : 177,623,721.41 = 69,974,266.59 : x - Step 2: Convert to fraction form
128,711,377.13/177,623,721.41 = 69,974,266.59/x - Step 3: Cross multiply
128,711,377.13x = 177,623,721.41 × 69,974,266.59 - Step 4: Simplify right side
128,711,377.13x = 12,429,089,634,301,360 - Step 5: Solve for x
x = 12,429,089,634,301,360/128,711,377.13 - Step 6: Final answer
x = 96,565,586.60
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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.