Finding the Fourth Proportional to 143,139,410.80, 214,709,116.20 and 66,436,946.80
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Solution
The fourth proportional to 143,139,410.80, 214,709,116.20 and 66,436,946.80 is: 99,655,420.20
Step by Step Solution
- Step 1: Write the proportion equation
143,139,410.80 : 214,709,116.20 = 66,436,946.80 : x - Step 2: Convert to fraction form
143,139,410.80/214,709,116.20 = 66,436,946.80/x - Step 3: Cross multiply
143,139,410.80x = 214,709,116.20 × 66,436,946.80 - Step 4: Simplify right side
143,139,410.80x = 14,264,618,130,454,416 - Step 5: Solve for x
x = 14,264,618,130,454,416/143,139,410.80 - Step 6: Final answer
x = 99,655,420.20
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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.