Finding the Fourth Proportional to 156,132,790.25, 215,462,669.96 and 86,518,115.62
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Solution
The fourth proportional to 156,132,790.25, 215,462,669.96 and 86,518,115.62 is: 119,394,677.84
Step by Step Solution
- Step 1: Write the proportion equation
156,132,790.25 : 215,462,669.96 = 86,518,115.62 : x - Step 2: Convert to fraction form
156,132,790.25/215,462,669.96 = 86,518,115.62/x - Step 3: Cross multiply
156,132,790.25x = 215,462,669.96 × 86,518,115.62 - Step 4: Simplify right side
156,132,790.25x = 18,641,424,191,070,820 - Step 5: Solve for x
x = 18,641,424,191,070,820/156,132,790.25 - Step 6: Final answer
x = 119,394,677.84
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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.