Finding the Fourth Proportional to 90,518,126.74, 135,864,877.87 and 85,602,297.49
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Solution
The fourth proportional to 90,518,126.74, 135,864,877.87 and 85,602,297.49 is: 128,486,371.88
Step by Step Solution
- Step 1: Write the proportion equation
90,518,126.74 : 135,864,877.87 = 85,602,297.49 : x - Step 2: Convert to fraction form
90,518,126.74/135,864,877.87 = 85,602,297.49/x - Step 3: Cross multiply
90,518,126.74x = 135,864,877.87 × 85,602,297.49 - Step 4: Simplify right side
90,518,126.74x = 11,630,345,693,637,598 - Step 5: Solve for x
x = 11,630,345,693,637,598/90,518,126.74 - Step 6: Final answer
x = 128,486,371.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.