Finding the Fourth Proportional to 91,031,572.80, 136,547,359.20 and 90,464,702.40
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Solution
The fourth proportional to 91,031,572.80, 136,547,359.20 and 90,464,702.40 is: 135,697,053.60
Step by Step Solution
- Step 1: Write the proportion equation
91,031,572.80 : 136,547,359.20 = 90,464,702.40 : x - Step 2: Convert to fraction form
91,031,572.80/136,547,359.20 = 90,464,702.40/x - Step 3: Cross multiply
91,031,572.80x = 136,547,359.20 × 90,464,702.40 - Step 4: Simplify right side
91,031,572.80x = 12,352,716,213,533,902 - Step 5: Solve for x
x = 12,352,716,213,533,902/91,031,572.80 - Step 6: Final answer
x = 135,697,053.60
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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.