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Finding the Fourth Proportional to 191,307.87, 286,831.94 and 107,125.92

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Solution

The fourth proportional to 191,307.87, 286,831.94 and 107,125.92 is: 160,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,307.87 : 286,831.94 = 107,125.92 : x
  2. Step 2: Convert to fraction form
    191,307.87/286,831.94 = 107,125.92/x
  3. Step 3: Cross multiply
    191,307.87x = 286,831.94 × 107,125.92
  4. Step 4: Simplify right side
    191,307.87x = 30,727,134,922.26
  5. Step 5: Solve for x
    x = 30,727,134,922.26/191,307.87
  6. Step 6: Final answer
    x = 160,616.16

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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.