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Finding the Fourth Proportional to 101,378.16, 139,889.58 and 56,050.02

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Solution

The fourth proportional to 101,378.16, 139,889.58 and 56,050.02 is: 77,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,378.16 : 139,889.58 = 56,050.02 : x
  2. Step 2: Convert to fraction form
    101,378.16/139,889.58 = 56,050.02/x
  3. Step 3: Cross multiply
    101,378.16x = 139,889.58 × 56,050.02
  4. Step 4: Simplify right side
    101,378.16x = 7,840,813,756.79
  5. Step 5: Solve for x
    x = 7,840,813,756.79/101,378.16
  6. Step 6: Final answer
    x = 77,342.24

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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.