Finding the Fourth Proportional to 97,990.32, 135,267.12 and 74,124.48
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Solution
The fourth proportional to 97,990.32, 135,267.12 and 74,124.48 is: 102,322.40
Step by Step Solution
- Step 1: Write the proportion equation
97,990.32 : 135,267.12 = 74,124.48 : x - Step 2: Convert to fraction form
97,990.32/135,267.12 = 74,124.48/x - Step 3: Cross multiply
97,990.32x = 135,267.12 × 74,124.48 - Step 4: Simplify right side
97,990.32x = 10,026,604,931.10 - Step 5: Solve for x
x = 10,026,604,931.10/97,990.32 - Step 6: Final answer
x = 102,322.40
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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.