Home / 145,430.40-200,793.36-111,378.72

Finding the Fourth Proportional to 145,430.40, 200,793.36 and 111,378.72

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Solution

The fourth proportional to 145,430.40, 200,793.36 and 111,378.72 is: 153,778.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,430.40 : 200,793.36 = 111,378.72 : x
  2. Step 2: Convert to fraction form
    145,430.40/200,793.36 = 111,378.72/x
  3. Step 3: Cross multiply
    145,430.40x = 200,793.36 × 111,378.72
  4. Step 4: Simplify right side
    145,430.40x = 22,364,107,421.30
  5. Step 5: Solve for x
    x = 22,364,107,421.30/145,430.40
  6. Step 6: Final answer
    x = 153,778.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.