Home / 149,915.60-224,743.80-90,688.40

Finding the Fourth Proportional to 149,915.60, 224,743.80 and 90,688.40

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Solution

The fourth proportional to 149,915.60, 224,743.80 and 90,688.40 is: 135,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,915.60 : 224,743.80 = 90,688.40 : x
  2. Step 2: Convert to fraction form
    149,915.60/224,743.80 = 90,688.40/x
  3. Step 3: Cross multiply
    149,915.60x = 224,743.80 × 90,688.40
  4. Step 4: Simplify right side
    149,915.60x = 20,381,655,631.92
  5. Step 5: Solve for x
    x = 20,381,655,631.92/149,915.60
  6. Step 6: Final answer
    x = 135,954.20

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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.