Home / 120,729.90-180,281.72-98,586.48

Finding the Fourth Proportional to 120,729.90, 180,281.72 and 98,586.48

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Solution

The fourth proportional to 120,729.90, 180,281.72 and 98,586.48 is: 147,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.90 : 180,281.72 = 98,586.48 : x
  2. Step 2: Convert to fraction form
    120,729.90/180,281.72 = 98,586.48/x
  3. Step 3: Cross multiply
    120,729.90x = 180,281.72 × 98,586.48
  4. Step 4: Simplify right side
    120,729.90x = 17,773,339,690.21
  5. Step 5: Solve for x
    x = 17,773,339,690.21/120,729.90
  6. Step 6: Final answer
    x = 147,215.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.