Finding the Fourth Proportional to 153,155,746.86, 211,432,977.99 and 118,270,122.54
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Solution
The fourth proportional to 153,155,746.86, 211,432,977.99 and 118,270,122.54 is: 163,273,038.91
Step by Step Solution
- Step 1: Write the proportion equation
153,155,746.86 : 211,432,977.99 = 118,270,122.54 : x - Step 2: Convert to fraction form
153,155,746.86/211,432,977.99 = 118,270,122.54/x - Step 3: Cross multiply
153,155,746.86x = 211,432,977.99 × 118,270,122.54 - Step 4: Simplify right side
153,155,746.86x = 25,006,204,215,874,424 - Step 5: Solve for x
x = 25,006,204,215,874,424/153,155,746.86 - Step 6: Final answer
x = 163,273,038.91
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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.