Home / 121,953.60-168,281.28-68,234.40

Finding the Fourth Proportional to 121,953.60, 168,281.28 and 68,234.40

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Solution

The fourth proportional to 121,953.60, 168,281.28 and 68,234.40 is: 94,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,953.60 : 168,281.28 = 68,234.40 : x
  2. Step 2: Convert to fraction form
    121,953.60/168,281.28 = 68,234.40/x
  3. Step 3: Cross multiply
    121,953.60x = 168,281.28 × 68,234.40
  4. Step 4: Simplify right side
    121,953.60x = 11,482,572,172.03
  5. Step 5: Solve for x
    x = 11,482,572,172.03/121,953.60
  6. Step 6: Final answer
    x = 94,155.25

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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.