Home / 158,140.49-218,305.13-100,856.68

Finding the Fourth Proportional to 158,140.49, 218,305.13 and 100,856.68

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Solution

The fourth proportional to 158,140.49, 218,305.13 and 100,856.68 is: 139,227.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,140.49 : 218,305.13 = 100,856.68 : x
  2. Step 2: Convert to fraction form
    158,140.49/218,305.13 = 100,856.68/x
  3. Step 3: Cross multiply
    158,140.49x = 218,305.13 × 100,856.68
  4. Step 4: Simplify right side
    158,140.49x = 22,017,529,588.72
  5. Step 5: Solve for x
    x = 22,017,529,588.72/158,140.49
  6. Step 6: Final answer
    x = 139,227.66

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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.