Finding the Fourth Proportional to 130,543,737.53, 180,408,726.95 and 106,985,124.05
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Solution
The fourth proportional to 130,543,737.53, 180,408,726.95 and 106,985,124.05 is: 147,851,213.68
Step by Step Solution
- Step 1: Write the proportion equation
130,543,737.53 : 180,408,726.95 = 106,985,124.05 : x - Step 2: Convert to fraction form
130,543,737.53/180,408,726.95 = 106,985,124.05/x - Step 3: Cross multiply
130,543,737.53x = 180,408,726.95 × 106,985,124.05 - Step 4: Simplify right side
130,543,737.53x = 19,301,050,031,011,360 - Step 5: Solve for x
x = 19,301,050,031,011,360/130,543,737.53 - Step 6: Final answer
x = 147,851,213.68
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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.