Home / 158,223.61-218,337.63-90,243.49

Finding the Fourth Proportional to 158,223.61, 218,337.63 and 90,243.49

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Solution

The fourth proportional to 158,223.61, 218,337.63 and 90,243.49 is: 124,529.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,223.61 : 218,337.63 = 90,243.49 : x
  2. Step 2: Convert to fraction form
    158,223.61/218,337.63 = 90,243.49/x
  3. Step 3: Cross multiply
    158,223.61x = 218,337.63 × 90,243.49
  4. Step 4: Simplify right side
    158,223.61x = 19,703,549,729.53
  5. Step 5: Solve for x
    x = 19,703,549,729.53/158,223.61
  6. Step 6: Final answer
    x = 124,529.77

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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.