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Finding the Fourth Proportional to 158,271.40, 218,463.78 and 130,277.80

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Solution

The fourth proportional to 158,271.40, 218,463.78 and 130,277.80 is: 179,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,271.40 : 218,463.78 = 130,277.80 : x
  2. Step 2: Convert to fraction form
    158,271.40/218,463.78 = 130,277.80/x
  3. Step 3: Cross multiply
    158,271.40x = 218,463.78 × 130,277.80
  4. Step 4: Simplify right side
    158,271.40x = 28,460,980,638.08
  5. Step 5: Solve for x
    x = 28,460,980,638.08/158,271.40
  6. Step 6: Final answer
    x = 179,823.90

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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.