Home / 134,508.40-185,614.48-77,144.76

Finding the Fourth Proportional to 134,508.40, 185,614.48 and 77,144.76

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Solution

The fourth proportional to 134,508.40, 185,614.48 and 77,144.76 is: 106,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,508.40 : 185,614.48 = 77,144.76 : x
  2. Step 2: Convert to fraction form
    134,508.40/185,614.48 = 77,144.76/x
  3. Step 3: Cross multiply
    134,508.40x = 185,614.48 × 77,144.76
  4. Step 4: Simplify right side
    134,508.40x = 14,319,184,512.12
  5. Step 5: Solve for x
    x = 14,319,184,512.12/134,508.40
  6. Step 6: Final answer
    x = 106,455.69

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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.