Finding the Fourth Proportional to 103,430,645.70, 155,133,526.95 and 42,840,053.70
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Solution
The fourth proportional to 103,430,645.70, 155,133,526.95 and 42,840,053.70 is: 64,254,927.35
Step by Step Solution
- Step 1: Write the proportion equation
103,430,645.70 : 155,133,526.95 = 42,840,053.70 : x - Step 2: Convert to fraction form
103,430,645.70/155,133,526.95 = 42,840,053.70/x - Step 3: Cross multiply
103,430,645.70x = 155,133,526.95 × 42,840,053.70 - Step 4: Simplify right side
103,430,645.70x = 6,645,928,625,208,397 - Step 5: Solve for x
x = 6,645,928,625,208,397/103,430,645.70 - Step 6: Final answer
x = 64,254,927.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.