Finding the Fourth Proportional to 128,949,029.35, 193,261,275 and 69,859,128.80
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Solution
The fourth proportional to 128,949,029.35, 193,261,275 and 69,859,128.80 is: 104,700,782.71
Step by Step Solution
- Step 1: Write the proportion equation
128,949,029.35 : 193,261,275 = 69,859,128.80 : x - Step 2: Convert to fraction form
128,949,029.35/193,261,275 = 69,859,128.80/x - Step 3: Cross multiply
128,949,029.35x = 193,261,275 × 69,859,128.80 - Step 4: Simplify right side
128,949,029.35x = 13,501,064,302,760,372 - Step 5: Solve for x
x = 13,501,064,302,760,372/128,949,029.35 - Step 6: Final answer
x = 104,700,782.71
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.