Home / 121,746.09-168,006.38-68,031.55

Finding the Fourth Proportional to 121,746.09, 168,006.38 and 68,031.55

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Solution

The fourth proportional to 121,746.09, 168,006.38 and 68,031.55 is: 93,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,746.09 : 168,006.38 = 68,031.55 : x
  2. Step 2: Convert to fraction form
    121,746.09/168,006.38 = 68,031.55/x
  3. Step 3: Cross multiply
    121,746.09x = 168,006.38 × 68,031.55
  4. Step 4: Simplify right side
    121,746.09x = 11,429,733,261.10
  5. Step 5: Solve for x
    x = 11,429,733,261.10/121,746.09
  6. Step 6: Final answer
    x = 93,881.73

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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.