Finding the Fourth Proportional to 156,772,072.48, 216,346,299.12 and 86,212,231.84
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Solution
The fourth proportional to 156,772,072.48, 216,346,299.12 and 86,212,231.84 is: 118,973,341.38
Step by Step Solution
- Step 1: Write the proportion equation
156,772,072.48 : 216,346,299.12 = 86,212,231.84 : x - Step 2: Convert to fraction form
156,772,072.48/216,346,299.12 = 86,212,231.84/x - Step 3: Cross multiply
156,772,072.48x = 216,346,299.12 × 86,212,231.84 - Step 4: Simplify right side
156,772,072.48x = 18,651,697,297,459,428 - Step 5: Solve for x
x = 18,651,697,297,459,428/156,772,072.48 - Step 6: Final answer
x = 118,973,341.38
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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.