Home / 155,904.32-215,148.88-87,922.64

Finding the Fourth Proportional to 155,904.32, 215,148.88 and 87,922.64

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Solution

The fourth proportional to 155,904.32, 215,148.88 and 87,922.64 is: 121,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,904.32 : 215,148.88 = 87,922.64 : x
  2. Step 2: Convert to fraction form
    155,904.32/215,148.88 = 87,922.64/x
  3. Step 3: Cross multiply
    155,904.32x = 215,148.88 × 87,922.64
  4. Step 4: Simplify right side
    155,904.32x = 18,916,457,522.64
  5. Step 5: Solve for x
    x = 18,916,457,522.64/155,904.32
  6. Step 6: Final answer
    x = 121,333.76

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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.