Home / 128,499.16-192,666.48-61,806.46

Finding the Fourth Proportional to 128,499.16, 192,666.48 and 61,806.46

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Solution

The fourth proportional to 128,499.16, 192,666.48 and 61,806.46 is: 92,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,499.16 : 192,666.48 = 61,806.46 : x
  2. Step 2: Convert to fraction form
    128,499.16/192,666.48 = 61,806.46/x
  3. Step 3: Cross multiply
    128,499.16x = 192,666.48 × 61,806.46
  4. Step 4: Simplify right side
    128,499.16x = 11,908,033,089.46
  5. Step 5: Solve for x
    x = 11,908,033,089.46/128,499.16
  6. Step 6: Final answer
    x = 92,670.12

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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.