Finding the Fourth Proportional to 103,117,235.70, 142,298,947.62 and 56,707,489.74
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Solution
The fourth proportional to 103,117,235.70, 142,298,947.62 and 56,707,489.74 is: 78,254,775.33
Step by Step Solution
- Step 1: Write the proportion equation
103,117,235.70 : 142,298,947.62 = 56,707,489.74 : x - Step 2: Convert to fraction form
103,117,235.70/142,298,947.62 = 56,707,489.74/x - Step 3: Cross multiply
103,117,235.70x = 142,298,947.62 × 56,707,489.74 - Step 4: Simplify right side
103,117,235.70x = 8,069,416,112,173,948 - Step 5: Solve for x
x = 8,069,416,112,173,948/103,117,235.70 - Step 6: Final answer
x = 78,254,775.33
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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.