Finding the Fourth Proportional to 108,907,986.70, 163,361,980.05 and 84,249,124.30
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Solution
The fourth proportional to 108,907,986.70, 163,361,980.05 and 84,249,124.30 is: 126,373,686.45
Step by Step Solution
- Step 1: Write the proportion equation
108,907,986.70 : 163,361,980.05 = 84,249,124.30 : x - Step 2: Convert to fraction form
108,907,986.70/163,361,980.05 = 84,249,124.30/x - Step 3: Cross multiply
108,907,986.70x = 163,361,980.05 × 84,249,124.30 - Step 4: Simplify right side
108,907,986.70x = 13,763,103,763,126,570 - Step 5: Solve for x
x = 13,763,103,763,126,570/108,907,986.70 - Step 6: Final answer
x = 126,373,686.45
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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.