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Finding the Fourth Proportional to 115,661.40, 173,621.70 and 89,482.20

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Solution

The fourth proportional to 115,661.40, 173,621.70 and 89,482.20 is: 134,323.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,661.40 : 173,621.70 = 89,482.20 : x
  2. Step 2: Convert to fraction form
    115,661.40/173,621.70 = 89,482.20/x
  3. Step 3: Cross multiply
    115,661.40x = 173,621.70 × 89,482.20
  4. Step 4: Simplify right side
    115,661.40x = 15,536,051,683.74
  5. Step 5: Solve for x
    x = 15,536,051,683.74/115,661.40
  6. Step 6: Final answer
    x = 134,323.57

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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.