Finding the Fourth Proportional to 120,231,124.18, 165,919,272.93 and 65,226,980.68
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Solution
The fourth proportional to 120,231,124.18, 165,919,272.93 and 65,226,980.68 is: 90,013,407.79
Step by Step Solution
- Step 1: Write the proportion equation
120,231,124.18 : 165,919,272.93 = 65,226,980.68 : x - Step 2: Convert to fraction form
120,231,124.18/165,919,272.93 = 65,226,980.68/x - Step 3: Cross multiply
120,231,124.18x = 165,919,272.93 × 65,226,980.68 - Step 4: Simplify right side
120,231,124.18x = 10,822,413,209,844,758 - Step 5: Solve for x
x = 10,822,413,209,844,758/120,231,124.18 - Step 6: Final answer
x = 90,013,407.79
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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.