Home / 158,165.36-218,259.88-90,184.40

Finding the Fourth Proportional to 158,165.36, 218,259.88 and 90,184.40

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Solution

The fourth proportional to 158,165.36, 218,259.88 and 90,184.40 is: 124,449.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,165.36 : 218,259.88 = 90,184.40 : x
  2. Step 2: Convert to fraction form
    158,165.36/218,259.88 = 90,184.40/x
  3. Step 3: Cross multiply
    158,165.36x = 218,259.88 × 90,184.40
  4. Step 4: Simplify right side
    158,165.36x = 19,683,636,321.87
  5. Step 5: Solve for x
    x = 19,683,636,321.87/158,165.36
  6. Step 6: Final answer
    x = 124,449.73

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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.