Finding the Fourth Proportional to 93,313.80, 139,970.70 and 69,985.80
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Solution
The fourth proportional to 93,313.80, 139,970.70 and 69,985.80 is: 104,978.70
Step by Step Solution
- Step 1: Write the proportion equation
93,313.80 : 139,970.70 = 69,985.80 : x - Step 2: Convert to fraction form
93,313.80/139,970.70 = 69,985.80/x - Step 3: Cross multiply
93,313.80x = 139,970.70 × 69,985.80 - Step 4: Simplify right side
93,313.80x = 9,795,961,416.06 - Step 5: Solve for x
x = 9,795,961,416.06/93,313.80 - Step 6: Final answer
x = 104,978.70
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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.