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Finding the Fourth Proportional to 158,300.92, 218,434.99 and 90,313.98

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Solution

The fourth proportional to 158,300.92, 218,434.99 and 90,313.98 is: 124,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,300.92 : 218,434.99 = 90,313.98 : x
  2. Step 2: Convert to fraction form
    158,300.92/218,434.99 = 90,313.98/x
  3. Step 3: Cross multiply
    158,300.92x = 218,434.99 × 90,313.98
  4. Step 4: Simplify right side
    158,300.92x = 19,727,733,318.16
  5. Step 5: Solve for x
    x = 19,727,733,318.16/158,300.92
  6. Step 6: Final answer
    x = 124,621.72

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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.