Home / 142,432.40-213,648.60-89,288.30

Finding the Fourth Proportional to 142,432.40, 213,648.60 and 89,288.30

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Solution

The fourth proportional to 142,432.40, 213,648.60 and 89,288.30 is: 133,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,432.40 : 213,648.60 = 89,288.30 : x
  2. Step 2: Convert to fraction form
    142,432.40/213,648.60 = 89,288.30/x
  3. Step 3: Cross multiply
    142,432.40x = 213,648.60 × 89,288.30
  4. Step 4: Simplify right side
    142,432.40x = 19,076,320,291.38
  5. Step 5: Solve for x
    x = 19,076,320,291.38/142,432.40
  6. Step 6: Final answer
    x = 133,932.45

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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.