Finding the Fourth Proportional to 125,209,567.68, 187,814,357.37 and 85,778,939.40
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Solution
The fourth proportional to 125,209,567.68, 187,814,357.37 and 85,778,939.40 is: 128,668,413.10
Step by Step Solution
- Step 1: Write the proportion equation
125,209,567.68 : 187,814,357.37 = 85,778,939.40 : x - Step 2: Convert to fraction form
125,209,567.68/187,814,357.37 = 85,778,939.40/x - Step 3: Cross multiply
125,209,567.68x = 187,814,357.37 × 85,778,939.40 - Step 4: Simplify right side
125,209,567.68x = 16,110,516,379,067,842 - Step 5: Solve for x
x = 16,110,516,379,067,842/125,209,567.68 - Step 6: Final answer
x = 128,668,413.10
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.