Finding the Fourth Proportional to 130,769,971.98, 180,462,571.10 and 72,032,637.07
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Solution
The fourth proportional to 130,769,971.98, 180,462,571.10 and 72,032,637.07 is: 99,405,044.53
Step by Step Solution
- Step 1: Write the proportion equation
130,769,971.98 : 180,462,571.10 = 72,032,637.07 : x - Step 2: Convert to fraction form
130,769,971.98/180,462,571.10 = 72,032,637.07/x - Step 3: Cross multiply
130,769,971.98x = 180,462,571.10 × 72,032,637.07 - Step 4: Simplify right side
130,769,971.98x = 12,999,194,888,494,294 - Step 5: Solve for x
x = 12,999,194,888,494,294/130,769,971.98 - Step 6: Final answer
x = 99,405,044.53
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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.