Finding the Fourth Proportional to 128,169,148.64, 176,872,668 and 69,432,933.12
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Solution
The fourth proportional to 128,169,148.64, 176,872,668 and 69,432,933.12 is: 95,817,037.55
Step by Step Solution
- Step 1: Write the proportion equation
128,169,148.64 : 176,872,668 = 69,432,933.12 : x - Step 2: Convert to fraction form
128,169,148.64/176,872,668 = 69,432,933.12/x - Step 3: Cross multiply
128,169,148.64x = 176,872,668 × 69,432,933.12 - Step 4: Simplify right side
128,169,148.64x = 12,280,788,127,999,966 - Step 5: Solve for x
x = 12,280,788,127,999,966/128,169,148.64 - Step 6: Final answer
x = 95,817,037.55
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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.