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Finding the Fourth Proportional to 102,052.60, 140,901.30 and 91,264.01

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Solution

The fourth proportional to 102,052.60, 140,901.30 and 91,264.01 is: 126,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,052.60 : 140,901.30 = 91,264.01 : x
  2. Step 2: Convert to fraction form
    102,052.60/140,901.30 = 91,264.01/x
  3. Step 3: Cross multiply
    102,052.60x = 140,901.30 × 91,264.01
  4. Step 4: Simplify right side
    102,052.60x = 12,859,216,947.71
  5. Step 5: Solve for x
    x = 12,859,216,947.71/102,052.60
  6. Step 6: Final answer
    x = 126,005.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.