Finding the Fourth Proportional to 75,158,136.14, 103,681,371.12 and 65,221,071.74
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Solution
The fourth proportional to 75,158,136.14, 103,681,371.12 and 65,221,071.74 is: 89,973,095.28
Step by Step Solution
- Step 1: Write the proportion equation
75,158,136.14 : 103,681,371.12 = 65,221,071.74 : x - Step 2: Convert to fraction form
75,158,136.14/103,681,371.12 = 65,221,071.74/x - Step 3: Cross multiply
75,158,136.14x = 103,681,371.12 × 65,221,071.74 - Step 4: Simplify right side
75,158,136.14x = 6,762,210,143,919,085 - Step 5: Solve for x
x = 6,762,210,143,919,085/75,158,136.14 - Step 6: Final answer
x = 89,973,095.28
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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.