Home / 120,411.61-180,565.07-64,239.19

Finding the Fourth Proportional to 120,411.61, 180,565.07 and 64,239.19

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Solution

The fourth proportional to 120,411.61, 180,565.07 and 64,239.19 is: 96,330.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,411.61 : 180,565.07 = 64,239.19 : x
  2. Step 2: Convert to fraction form
    120,411.61/180,565.07 = 64,239.19/x
  3. Step 3: Cross multiply
    120,411.61x = 180,565.07 × 64,239.19
  4. Step 4: Simplify right side
    120,411.61x = 11,599,353,066.48
  5. Step 5: Solve for x
    x = 11,599,353,066.48/120,411.61
  6. Step 6: Final answer
    x = 96,330.85

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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.