Home / 120,322.38-180,422.85-70,417.47

Finding the Fourth Proportional to 120,322.38, 180,422.85 and 70,417.47

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Solution

The fourth proportional to 120,322.38, 180,422.85 and 70,417.47 is: 105,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,322.38 : 180,422.85 = 70,417.47 : x
  2. Step 2: Convert to fraction form
    120,322.38/180,422.85 = 70,417.47/x
  3. Step 3: Cross multiply
    120,322.38x = 180,422.85 × 70,417.47
  4. Step 4: Simplify right side
    120,322.38x = 12,704,920,627.19
  5. Step 5: Solve for x
    x = 12,704,920,627.19/120,322.38
  6. Step 6: Final answer
    x = 105,590.67

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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.