Finding the Fourth Proportional to 121,737,830.77, 167,980,269.85 and 74,028,746.53
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Solution
The fourth proportional to 121,737,830.77, 167,980,269.85 and 74,028,746.53 is: 102,148,762.96
Step by Step Solution
- Step 1: Write the proportion equation
121,737,830.77 : 167,980,269.85 = 74,028,746.53 : x - Step 2: Convert to fraction form
121,737,830.77/167,980,269.85 = 74,028,746.53/x - Step 3: Cross multiply
121,737,830.77x = 167,980,269.85 × 74,028,746.53 - Step 4: Simplify right side
121,737,830.77x = 12,435,368,818,766,650 - Step 5: Solve for x
x = 12,435,368,818,766,650/121,737,830.77 - Step 6: Final answer
x = 102,148,762.96
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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.