Home / 128,045.10-192,096.45-39,302.70

Finding the Fourth Proportional to 128,045.10, 192,096.45 and 39,302.70

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Solution

The fourth proportional to 128,045.10, 192,096.45 and 39,302.70 is: 58,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.10 : 192,096.45 = 39,302.70 : x
  2. Step 2: Convert to fraction form
    128,045.10/192,096.45 = 39,302.70/x
  3. Step 3: Cross multiply
    128,045.10x = 192,096.45 × 39,302.70
  4. Step 4: Simplify right side
    128,045.10x = 7,549,909,145.42
  5. Step 5: Solve for x
    x = 7,549,909,145.42/128,045.10
  6. Step 6: Final answer
    x = 58,962.89

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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.