Home / 90,697.20-136,045.80-89,822.40

Finding the Fourth Proportional to 90,697.20, 136,045.80 and 89,822.40

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Solution

The fourth proportional to 90,697.20, 136,045.80 and 89,822.40 is: 134,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,697.20 : 136,045.80 = 89,822.40 : x
  2. Step 2: Convert to fraction form
    90,697.20/136,045.80 = 89,822.40/x
  3. Step 3: Cross multiply
    90,697.20x = 136,045.80 × 89,822.40
  4. Step 4: Simplify right side
    90,697.20x = 12,219,960,265.92
  5. Step 5: Solve for x
    x = 12,219,960,265.92/90,697.20
  6. Step 6: Final answer
    x = 134,733.60

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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.