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Finding the Fourth Proportional to 101,397.46, 139,939.01 and 58,378.50

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Solution

The fourth proportional to 101,397.46, 139,939.01 and 58,378.50 is: 80,568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,397.46 : 139,939.01 = 58,378.50 : x
  2. Step 2: Convert to fraction form
    101,397.46/139,939.01 = 58,378.50/x
  3. Step 3: Cross multiply
    101,397.46x = 139,939.01 × 58,378.50
  4. Step 4: Simplify right side
    101,397.46x = 8,169,429,495.29
  5. Step 5: Solve for x
    x = 8,169,429,495.29/101,397.46
  6. Step 6: Final answer
    x = 80,568.38

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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.