Finding the Fourth Proportional to 112,853,689.99, 155,671,950.80 and 70,971,322.93
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Solution
The fourth proportional to 112,853,689.99, 155,671,950.80 and 70,971,322.93 is: 97,898,830.71
Step by Step Solution
- Step 1: Write the proportion equation
112,853,689.99 : 155,671,950.80 = 70,971,322.93 : x - Step 2: Convert to fraction form
112,853,689.99/155,671,950.80 = 70,971,322.93/x - Step 3: Cross multiply
112,853,689.99x = 155,671,950.80 × 70,971,322.93 - Step 4: Simplify right side
112,853,689.99x = 11,048,244,291,158,120 - Step 5: Solve for x
x = 11,048,244,291,158,120/112,853,689.99 - Step 6: Final answer
x = 97,898,830.71
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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.