Home / 145,153.60-217,438.80-100,830.40

Finding the Fourth Proportional to 145,153.60, 217,438.80 and 100,830.40

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Solution

The fourth proportional to 145,153.60, 217,438.80 and 100,830.40 is: 151,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,153.60 : 217,438.80 = 100,830.40 : x
  2. Step 2: Convert to fraction form
    145,153.60/217,438.80 = 100,830.40/x
  3. Step 3: Cross multiply
    145,153.60x = 217,438.80 × 100,830.40
  4. Step 4: Simplify right side
    145,153.60x = 21,924,441,179.52
  5. Step 5: Solve for x
    x = 21,924,441,179.52/145,153.60
  6. Step 6: Final answer
    x = 151,043.04

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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.