Finding the Fourth Proportional to 129,402,430.12, 178,598,419.86 and 76,476,977.20
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Solution
The fourth proportional to 129,402,430.12, 178,598,419.86 and 76,476,977.20 is: 105,551,860.74
Step by Step Solution
- Step 1: Write the proportion equation
129,402,430.12 : 178,598,419.86 = 76,476,977.20 : x - Step 2: Convert to fraction form
129,402,430.12/178,598,419.86 = 76,476,977.20/x - Step 3: Cross multiply
129,402,430.12x = 178,598,419.86 × 76,476,977.20 - Step 4: Simplify right side
129,402,430.12x = 13,658,667,283,589,248 - Step 5: Solve for x
x = 13,658,667,283,589,248/129,402,430.12 - Step 6: Final answer
x = 105,551,860.74
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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.