Home / 140,434.08-210,690.24-78,148.32

Finding the Fourth Proportional to 140,434.08, 210,690.24 and 78,148.32

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Solution

The fourth proportional to 140,434.08, 210,690.24 and 78,148.32 is: 117,244.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,434.08 : 210,690.24 = 78,148.32 : x
  2. Step 2: Convert to fraction form
    140,434.08/210,690.24 = 78,148.32/x
  3. Step 3: Cross multiply
    140,434.08x = 210,690.24 × 78,148.32
  4. Step 4: Simplify right side
    140,434.08x = 16,465,088,296.40
  5. Step 5: Solve for x
    x = 16,465,088,296.40/140,434.08
  6. Step 6: Final answer
    x = 117,244.25

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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.