Home / 128,523,861.48-177,241,328.10-84,392,996.52

Finding the Fourth Proportional to 128,523,861.48, 177,241,328.10 and 84,392,996.52

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Solution

The fourth proportional to 128,523,861.48, 177,241,328.10 and 84,392,996.52 is: 116,382,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,523,861.48 : 177,241,328.10 = 84,392,996.52 : x
  2. Step 2: Convert to fraction form
    128,523,861.48/177,241,328.10 = 84,392,996.52/x
  3. Step 3: Cross multiply
    128,523,861.48x = 177,241,328.10 × 84,392,996.52
  4. Step 4: Simplify right side
    128,523,861.48x = 14,957,926,785,543,476
  5. Step 5: Solve for x
    x = 14,957,926,785,543,476/128,523,861.48
  6. Step 6: Final answer
    x = 116,382,488.15

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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.