Finding the Fourth Proportional to 149,872,340.19, 206,709,315.62 and 128,999,330.31
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Solution
The fourth proportional to 149,872,340.19, 206,709,315.62 and 128,999,330.31 is: 177,920,510.54
Step by Step Solution
- Step 1: Write the proportion equation
149,872,340.19 : 206,709,315.62 = 128,999,330.31 : x - Step 2: Convert to fraction form
149,872,340.19/206,709,315.62 = 128,999,330.31/x - Step 3: Cross multiply
149,872,340.19x = 206,709,315.62 × 128,999,330.31 - Step 4: Simplify right side
149,872,340.19x = 26,665,363,283,173,428 - Step 5: Solve for x
x = 26,665,363,283,173,428/149,872,340.19 - Step 6: Final answer
x = 177,920,510.54
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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.