Home / 152,769.60-210,880.80-99,115.20

Finding the Fourth Proportional to 152,769.60, 210,880.80 and 99,115.20

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Solution

The fourth proportional to 152,769.60, 210,880.80 and 99,115.20 is: 136,817.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,769.60 : 210,880.80 = 99,115.20 : x
  2. Step 2: Convert to fraction form
    152,769.60/210,880.80 = 99,115.20/x
  3. Step 3: Cross multiply
    152,769.60x = 210,880.80 × 99,115.20
  4. Step 4: Simplify right side
    152,769.60x = 20,901,492,668.16
  5. Step 5: Solve for x
    x = 20,901,492,668.16/152,769.60
  6. Step 6: Final answer
    x = 136,817.09

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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.