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Finding the Fourth Proportional to 158,715.32, 219,027.02 and 90,733.80

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Solution

The fourth proportional to 158,715.32, 219,027.02 and 90,733.80 is: 125,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,715.32 : 219,027.02 = 90,733.80 : x
  2. Step 2: Convert to fraction form
    158,715.32/219,027.02 = 90,733.80/x
  3. Step 3: Cross multiply
    158,715.32x = 219,027.02 × 90,733.80
  4. Step 4: Simplify right side
    158,715.32x = 19,873,153,827.28
  5. Step 5: Solve for x
    x = 19,873,153,827.28/158,715.32
  6. Step 6: Final answer
    x = 125,212.57

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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.