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Finding the Fourth Proportional to 105,931.56, 158,894.91 and 53,326.92

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Solution

The fourth proportional to 105,931.56, 158,894.91 and 53,326.92 is: 79,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,931.56 : 158,894.91 = 53,326.92 : x
  2. Step 2: Convert to fraction form
    105,931.56/158,894.91 = 53,326.92/x
  3. Step 3: Cross multiply
    105,931.56x = 158,894.91 × 53,326.92
  4. Step 4: Simplify right side
    105,931.56x = 8,473,376,153.98
  5. Step 5: Solve for x
    x = 8,473,376,153.98/105,931.56
  6. Step 6: Final answer
    x = 79,989.16

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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.