Finding the Fourth Proportional to 86,920,128,643.35, 130,380,192,965.02 and 84,471,248,515.35
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Solution
The fourth proportional to 86,920,128,643.35, 130,380,192,965.02 and 84,471,248,515.35 is: 126,706,872,773.02
Step by Step Solution
- Step 1: Write the proportion equation
86,920,128,643.35 : 130,380,192,965.02 = 84,471,248,515.35 : x - Step 2: Convert to fraction form
86,920,128,643.35/130,380,192,965.02 = 84,471,248,515.35/x - Step 3: Cross multiply
86,920,128,643.35x = 130,380,192,965.02 × 84,471,248,515.35 - Step 4: Simplify right side
86,920,128,643.35x = 11,013,377,681,427,494,076,416 - Step 5: Solve for x
x = 11,013,377,681,427,494,076,416/86,920,128,643.35 - Step 6: Final answer
x = 126,706,872,773.02
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1.5x scale
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.