Home / 117,482.10-162,209.55-72,220.76

Finding the Fourth Proportional to 117,482.10, 162,209.55 and 72,220.76

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Solution

The fourth proportional to 117,482.10, 162,209.55 and 72,220.76 is: 99,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,482.10 : 162,209.55 = 72,220.76 : x
  2. Step 2: Convert to fraction form
    117,482.10/162,209.55 = 72,220.76/x
  3. Step 3: Cross multiply
    117,482.10x = 162,209.55 × 72,220.76
  4. Step 4: Simplify right side
    117,482.10x = 11,714,897,024.68
  5. Step 5: Solve for x
    x = 11,714,897,024.68/117,482.10
  6. Step 6: Final answer
    x = 99,716.45

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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.