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Finding the Fourth Proportional to 153,443.62, 230,017.80 and 78,599.01

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Solution

The fourth proportional to 153,443.62, 230,017.80 and 78,599.01 is: 117,822.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,443.62 : 230,017.80 = 78,599.01 : x
  2. Step 2: Convert to fraction form
    153,443.62/230,017.80 = 78,599.01/x
  3. Step 3: Cross multiply
    153,443.62x = 230,017.80 × 78,599.01
  4. Step 4: Simplify right side
    153,443.62x = 18,079,172,133.92
  5. Step 5: Solve for x
    x = 18,079,172,133.92/153,443.62
  6. Step 6: Final answer
    x = 117,822.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.