Home / 120,009.18-180,013.12-48,931.54

Finding the Fourth Proportional to 120,009.18, 180,013.12 and 48,931.54

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Solution

The fourth proportional to 120,009.18, 180,013.12 and 48,931.54 is: 73,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,009.18 : 180,013.12 = 48,931.54 : x
  2. Step 2: Convert to fraction form
    120,009.18/180,013.12 = 48,931.54/x
  3. Step 3: Cross multiply
    120,009.18x = 180,013.12 × 48,931.54
  4. Step 4: Simplify right side
    120,009.18x = 8,808,319,115.73
  5. Step 5: Solve for x
    x = 8,808,319,115.73/120,009.18
  6. Step 6: Final answer
    x = 73,397.05

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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.