Finding the Fourth Proportional to 100,708,911.84, 138,970,348.74 and 56,647,138.53
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Solution
The fourth proportional to 100,708,911.84, 138,970,348.74 and 56,647,138.53 is: 78,168,579.65
Step by Step Solution
- Step 1: Write the proportion equation
100,708,911.84 : 138,970,348.74 = 56,647,138.53 : x - Step 2: Convert to fraction form
100,708,911.84/138,970,348.74 = 56,647,138.53/x - Step 3: Cross multiply
100,708,911.84x = 138,970,348.74 × 56,647,138.53 - Step 4: Simplify right side
100,708,911.84x = 7,872,272,596,637,192 - Step 5: Solve for x
x = 7,872,272,596,637,192/100,708,911.84 - Step 6: Final answer
x = 78,168,579.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.