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Finding the Fourth Proportional to 126,802.40, 175,039.80 and 81,482.90

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Solution

The fourth proportional to 126,802.40, 175,039.80 and 81,482.90 is: 112,480.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,802.40 : 175,039.80 = 81,482.90 : x
  2. Step 2: Convert to fraction form
    126,802.40/175,039.80 = 81,482.90/x
  3. Step 3: Cross multiply
    126,802.40x = 175,039.80 × 81,482.90
  4. Step 4: Simplify right side
    126,802.40x = 14,262,750,519.42
  5. Step 5: Solve for x
    x = 14,262,750,519.42/126,802.40
  6. Step 6: Final answer
    x = 112,480.13

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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.