Home / 145,011.20-217,452.51-77,526.86

Finding the Fourth Proportional to 145,011.20, 217,452.51 and 77,526.86

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Solution

The fourth proportional to 145,011.20, 217,452.51 and 77,526.86 is: 116,255.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,011.20 : 217,452.51 = 77,526.86 : x
  2. Step 2: Convert to fraction form
    145,011.20/217,452.51 = 77,526.86/x
  3. Step 3: Cross multiply
    145,011.20x = 217,452.51 × 77,526.86
  4. Step 4: Simplify right side
    145,011.20x = 16,858,409,212.16
  5. Step 5: Solve for x
    x = 16,858,409,212.16/145,011.20
  6. Step 6: Final answer
    x = 116,255.92

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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.