Finding the Fourth Proportional to 156,161,228.04, 215,502,515.12 and 86,551,102.98
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Solution
The fourth proportional to 156,161,228.04, 215,502,515.12 and 86,551,102.98 is: 119,440,533.43
Step by Step Solution
- Step 1: Write the proportion equation
156,161,228.04 : 215,502,515.12 = 86,551,102.98 : x - Step 2: Convert to fraction form
156,161,228.04/215,502,515.12 = 86,551,102.98/x - Step 3: Cross multiply
156,161,228.04x = 215,502,515.12 × 86,551,102.98 - Step 4: Simplify right side
156,161,228.04x = 18,651,980,378,600,128 - Step 5: Solve for x
x = 18,651,980,378,600,128/156,161,228.04 - Step 6: Final answer
x = 119,440,533.43
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1.5x scale
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.