Home / 153,243.20-229,864.80-78,334.40

Finding the Fourth Proportional to 153,243.20, 229,864.80 and 78,334.40

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Solution

The fourth proportional to 153,243.20, 229,864.80 and 78,334.40 is: 117,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,243.20 : 229,864.80 = 78,334.40 : x
  2. Step 2: Convert to fraction form
    153,243.20/229,864.80 = 78,334.40/x
  3. Step 3: Cross multiply
    153,243.20x = 229,864.80 × 78,334.40
  4. Step 4: Simplify right side
    153,243.20x = 18,006,321,189.12
  5. Step 5: Solve for x
    x = 18,006,321,189.12/153,243.20
  6. Step 6: Final answer
    x = 117,501.60

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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.