Finding the Fourth Proportional to 90,683,726.99, 135,826,204.61 and 74,943,161.21
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Solution
The fourth proportional to 90,683,726.99, 135,826,204.61 and 74,943,161.21 is: 112,249,964.66
Step by Step Solution
- Step 1: Write the proportion equation
90,683,726.99 : 135,826,204.61 = 74,943,161.21 : x - Step 2: Convert to fraction form
90,683,726.99/135,826,204.61 = 74,943,161.21/x - Step 3: Cross multiply
90,683,726.99x = 135,826,204.61 × 74,943,161.21 - Step 4: Simplify right side
90,683,726.99x = 10,179,245,149,156,600 - Step 5: Solve for x
x = 10,179,245,149,156,600/90,683,726.99 - Step 6: Final answer
x = 112,249,964.66
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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.