Home / 90,237.20-135,064.20-70,408.40

Finding the Fourth Proportional to 90,237.20, 135,064.20 and 70,408.40

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Solution

The fourth proportional to 90,237.20, 135,064.20 and 70,408.40 is: 105,385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,237.20 : 135,064.20 = 70,408.40 : x
  2. Step 2: Convert to fraction form
    90,237.20/135,064.20 = 70,408.40/x
  3. Step 3: Cross multiply
    90,237.20x = 135,064.20 × 70,408.40
  4. Step 4: Simplify right side
    90,237.20x = 9,509,654,219.28
  5. Step 5: Solve for x
    x = 9,509,654,219.28/90,237.20
  6. Step 6: Final answer
    x = 105,385.08

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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.