Finding the Fourth Proportional to 156,768,322.98, 216,354,059.10 and 86,216,354.10
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Solution
The fourth proportional to 156,768,322.98, 216,354,059.10 and 86,216,354.10 is: 118,986,143.47
Step by Step Solution
- Step 1: Write the proportion equation
156,768,322.98 : 216,354,059.10 = 86,216,354.10 : x - Step 2: Convert to fraction form
156,768,322.98/216,354,059.10 = 86,216,354.10/x - Step 3: Cross multiply
156,768,322.98x = 216,354,059.10 × 86,216,354.10 - Step 4: Simplify right side
156,768,322.98x = 18,653,258,170,337,924 - Step 5: Solve for x
x = 18,653,258,170,337,924/156,768,322.98 - Step 6: Final answer
x = 118,986,143.47
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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.