Finding the Fourth Proportional to 121,881,122.55, 168,163,413.12 and 72,280,257.80
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Solution
The fourth proportional to 121,881,122.55, 168,163,413.12 and 72,280,257.80 is: 99,727,460.64
Step by Step Solution
- Step 1: Write the proportion equation
121,881,122.55 : 168,163,413.12 = 72,280,257.80 : x - Step 2: Convert to fraction form
121,881,122.55/168,163,413.12 = 72,280,257.80/x - Step 3: Cross multiply
121,881,122.55x = 168,163,413.12 × 72,280,257.80 - Step 4: Simplify right side
121,881,122.55x = 12,154,894,852,000,686 - Step 5: Solve for x
x = 12,154,894,852,000,686/121,881,122.55 - Step 6: Final answer
x = 99,727,460.64
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.