Finding the Fourth Proportional to 128,115,569.04, 176,799,655.98 and 69,378,335.52
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Solution
The fourth proportional to 128,115,569.04, 176,799,655.98 and 69,378,335.52 is: 95,742,195.46
Step by Step Solution
- Step 1: Write the proportion equation
128,115,569.04 : 176,799,655.98 = 69,378,335.52 : x - Step 2: Convert to fraction form
128,115,569.04/176,799,655.98 = 69,378,335.52/x - Step 3: Cross multiply
128,115,569.04x = 176,799,655.98 × 69,378,335.52 - Step 4: Simplify right side
128,115,569.04x = 12,266,065,852,401,012 - Step 5: Solve for x
x = 12,266,065,852,401,012/128,115,569.04 - Step 6: Final answer
x = 95,742,195.46
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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.