Home / 158,400.23-218,607.99-90,427.43

Finding the Fourth Proportional to 158,400.23, 218,607.99 and 90,427.43

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Solution

The fourth proportional to 158,400.23, 218,607.99 and 90,427.43 is: 124,798.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,400.23 : 218,607.99 = 90,427.43 : x
  2. Step 2: Convert to fraction form
    158,400.23/218,607.99 = 90,427.43/x
  3. Step 3: Cross multiply
    158,400.23x = 218,607.99 × 90,427.43
  4. Step 4: Simplify right side
    158,400.23x = 19,768,159,259.69
  5. Step 5: Solve for x
    x = 19,768,159,259.69/158,400.23
  6. Step 6: Final answer
    x = 124,798.81

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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.