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Finding the Fourth Proportional to 158,384.88, 218,586.80 and 90,412.07

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Solution

The fourth proportional to 158,384.88, 218,586.80 and 90,412.07 is: 124,777.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,384.88 : 218,586.80 = 90,412.07 : x
  2. Step 2: Convert to fraction form
    158,384.88/218,586.80 = 90,412.07/x
  3. Step 3: Cross multiply
    158,384.88x = 218,586.80 × 90,412.07
  4. Step 4: Simplify right side
    158,384.88x = 19,762,885,157.08
  5. Step 5: Solve for x
    x = 19,762,885,157.08/158,384.88
  6. Step 6: Final answer
    x = 124,777.60

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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.