Finding the Fourth Proportional to 118,350,886.07, 163,310,077.98 and 65,420,443.68
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Solution
The fourth proportional to 118,350,886.07, 163,310,077.98 and 65,420,443.68 is: 90,272,393.51
Step by Step Solution
- Step 1: Write the proportion equation
118,350,886.07 : 163,310,077.98 = 65,420,443.68 : x - Step 2: Convert to fraction form
118,350,886.07/163,310,077.98 = 65,420,443.68/x - Step 3: Cross multiply
118,350,886.07x = 163,310,077.98 × 65,420,443.68 - Step 4: Simplify right side
118,350,886.07x = 10,683,817,758,866,998 - Step 5: Solve for x
x = 10,683,817,758,866,998/118,350,886.07 - Step 6: Final answer
x = 90,272,393.51
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1.5x scale
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.