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Finding the Fourth Proportional to 92,833.70, 139,250.55 and 86,928.80

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Solution

The fourth proportional to 92,833.70, 139,250.55 and 86,928.80 is: 130,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,833.70 : 139,250.55 = 86,928.80 : x
  2. Step 2: Convert to fraction form
    92,833.70/139,250.55 = 86,928.80/x
  3. Step 3: Cross multiply
    92,833.70x = 139,250.55 × 86,928.80
  4. Step 4: Simplify right side
    92,833.70x = 12,104,883,210.84
  5. Step 5: Solve for x
    x = 12,104,883,210.84/92,833.70
  6. Step 6: Final answer
    x = 130,393.20

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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.