Home / 134,319.92-185,367.72-77,720.32

Finding the Fourth Proportional to 134,319.92, 185,367.72 and 77,720.32

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Solution

The fourth proportional to 134,319.92, 185,367.72 and 77,720.32 is: 107,257.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,319.92 : 185,367.72 = 77,720.32 : x
  2. Step 2: Convert to fraction form
    134,319.92/185,367.72 = 77,720.32/x
  3. Step 3: Cross multiply
    134,319.92x = 185,367.72 × 77,720.32
  4. Step 4: Simplify right side
    134,319.92x = 14,406,838,516.07
  5. Step 5: Solve for x
    x = 14,406,838,516.07/134,319.92
  6. Step 6: Final answer
    x = 107,257.65

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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.