Finding the Fourth Proportional to 128,111,688.08, 176,806,775.40 and 73,115,772.56
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Solution
The fourth proportional to 128,111,688.08, 176,806,775.40 and 73,115,772.56 is: 100,906,983.36
Step by Step Solution
- Step 1: Write the proportion equation
128,111,688.08 : 176,806,775.40 = 73,115,772.56 : x - Step 2: Convert to fraction form
128,111,688.08/176,806,775.40 = 73,115,772.56/x - Step 3: Cross multiply
128,111,688.08x = 176,806,775.40 × 73,115,772.56 - Step 4: Simplify right side
128,111,688.08x = 12,927,363,977,213,404 - Step 5: Solve for x
x = 12,927,363,977,213,404/128,111,688.08 - Step 6: Final answer
x = 100,906,983.36
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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.