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Finding the Fourth Proportional to 128,369.59, 192,437.74 and 58,210.63

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Solution

The fourth proportional to 128,369.59, 192,437.74 and 58,210.63 is: 87,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,369.59 : 192,437.74 = 58,210.63 : x
  2. Step 2: Convert to fraction form
    128,369.59/192,437.74 = 58,210.63/x
  3. Step 3: Cross multiply
    128,369.59x = 192,437.74 × 58,210.63
  4. Step 4: Simplify right side
    128,369.59x = 11,201,922,081.18
  5. Step 5: Solve for x
    x = 11,201,922,081.18/128,369.59
  6. Step 6: Final answer
    x = 87,263.05

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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.