Finding the Fourth Proportional to 156,081,246.86, 215,405,347.68 and 86,488,457.42
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Solution
The fourth proportional to 156,081,246.86, 215,405,347.68 and 86,488,457.42 is: 119,361,400.65
Step by Step Solution
- Step 1: Write the proportion equation
156,081,246.86 : 215,405,347.68 = 86,488,457.42 : x - Step 2: Convert to fraction form
156,081,246.86/215,405,347.68 = 86,488,457.42/x - Step 3: Cross multiply
156,081,246.86x = 215,405,347.68 × 86,488,457.42 - Step 4: Simplify right side
156,081,246.86x = 18,630,076,241,400,488 - Step 5: Solve for x
x = 18,630,076,241,400,488/156,081,246.86 - Step 6: Final answer
x = 119,361,400.65
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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.