Finding the Fourth Proportional to 129,488,315.75, 178,695,130.82 and 70,750,975.40
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Solution
The fourth proportional to 129,488,315.75, 178,695,130.82 and 70,750,975.40 is: 97,637,031.81
Step by Step Solution
- Step 1: Write the proportion equation
129,488,315.75 : 178,695,130.82 = 70,750,975.40 : x - Step 2: Convert to fraction form
129,488,315.75/178,695,130.82 = 70,750,975.40/x - Step 3: Cross multiply
129,488,315.75x = 178,695,130.82 × 70,750,975.40 - Step 4: Simplify right side
129,488,315.75x = 12,642,854,803,498,370 - Step 5: Solve for x
x = 12,642,854,803,498,370/129,488,315.75 - Step 6: Final answer
x = 97,637,031.81
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.