Home / 115,807.21-159,838.85-70,500.13

Finding the Fourth Proportional to 115,807.21, 159,838.85 and 70,500.13

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Solution

The fourth proportional to 115,807.21, 159,838.85 and 70,500.13 is: 97,305.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,807.21 : 159,838.85 = 70,500.13 : x
  2. Step 2: Convert to fraction form
    115,807.21/159,838.85 = 70,500.13/x
  3. Step 3: Cross multiply
    115,807.21x = 159,838.85 × 70,500.13
  4. Step 4: Simplify right side
    115,807.21x = 11,268,659,480.70
  5. Step 5: Solve for x
    x = 11,268,659,480.70/115,807.21
  6. Step 6: Final answer
    x = 97,305.34

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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.