Home / 119,920.16-165,495.36-66,212.80

Finding the Fourth Proportional to 119,920.16, 165,495.36 and 66,212.80

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Solution

The fourth proportional to 119,920.16, 165,495.36 and 66,212.80 is: 91,376.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,920.16 : 165,495.36 = 66,212.80 : x
  2. Step 2: Convert to fraction form
    119,920.16/165,495.36 = 66,212.80/x
  3. Step 3: Cross multiply
    119,920.16x = 165,495.36 × 66,212.80
  4. Step 4: Simplify right side
    119,920.16x = 10,957,911,172.61
  5. Step 5: Solve for x
    x = 10,957,911,172.61/119,920.16
  6. Step 6: Final answer
    x = 91,376.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.