Finding the Fourth Proportional to 103,616,815.12, 142,988,354.28 and 57,206,225.68
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Solution
The fourth proportional to 103,616,815.12, 142,988,354.28 and 57,206,225.68 is: 78,943,017.65
Step by Step Solution
- Step 1: Write the proportion equation
103,616,815.12 : 142,988,354.28 = 57,206,225.68 : x - Step 2: Convert to fraction form
103,616,815.12/142,988,354.28 = 57,206,225.68/x - Step 3: Cross multiply
103,616,815.12x = 142,988,354.28 × 57,206,225.68 - Step 4: Simplify right side
103,616,815.12x = 8,179,824,064,553,474 - Step 5: Solve for x
x = 8,179,824,064,553,474/103,616,815.12 - Step 6: Final answer
x = 78,943,017.65
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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.