Home / 142,470.40-213,705.60-135,909.40

Finding the Fourth Proportional to 142,470.40, 213,705.60 and 135,909.40

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Solution

The fourth proportional to 142,470.40, 213,705.60 and 135,909.40 is: 203,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,470.40 : 213,705.60 = 135,909.40 : x
  2. Step 2: Convert to fraction form
    142,470.40/213,705.60 = 135,909.40/x
  3. Step 3: Cross multiply
    142,470.40x = 213,705.60 × 135,909.40
  4. Step 4: Simplify right side
    142,470.40x = 29,044,599,872.64
  5. Step 5: Solve for x
    x = 29,044,599,872.64/142,470.40
  6. Step 6: Final answer
    x = 203,864.10

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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.