Home / 90,528.04-136,013.46-85,492.45

Finding the Fourth Proportional to 90,528.04, 136,013.46 and 85,492.45

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Solution

The fourth proportional to 90,528.04, 136,013.46 and 85,492.45 is: 128,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,528.04 : 136,013.46 = 85,492.45 : x
  2. Step 2: Convert to fraction form
    90,528.04/136,013.46 = 85,492.45/x
  3. Step 3: Cross multiply
    90,528.04x = 136,013.46 × 85,492.45
  4. Step 4: Simplify right side
    90,528.04x = 11,628,123,928.38
  5. Step 5: Solve for x
    x = 11,628,123,928.38/90,528.04
  6. Step 6: Final answer
    x = 128,447.76

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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.