Finding the Fourth Proportional to 90,748,271.80, 136,122,407.70 and 74,805,041.80
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Solution
The fourth proportional to 90,748,271.80, 136,122,407.70 and 74,805,041.80 is: 112,207,562.70
Step by Step Solution
- Step 1: Write the proportion equation
90,748,271.80 : 136,122,407.70 = 74,805,041.80 : x - Step 2: Convert to fraction form
90,748,271.80/136,122,407.70 = 74,805,041.80/x - Step 3: Cross multiply
90,748,271.80x = 136,122,407.70 × 74,805,041.80 - Step 4: Simplify right side
90,748,271.80x = 10,182,642,397,915,140 - Step 5: Solve for x
x = 10,182,642,397,915,140/90,748,271.80 - Step 6: Final answer
x = 112,207,562.70
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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.