Home / 345,711.12-518,566.56-83,055.12

Finding the Fourth Proportional to 345,711.12, 518,566.56 and 83,055.12

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Solution

The fourth proportional to 345,711.12, 518,566.56 and 83,055.12 is: 124,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,711.12 : 518,566.56 = 83,055.12 : x
  2. Step 2: Convert to fraction form
    345,711.12/518,566.56 = 83,055.12/x
  3. Step 3: Cross multiply
    345,711.12x = 518,566.56 × 83,055.12
  4. Step 4: Simplify right side
    345,711.12x = 43,069,607,868.79
  5. Step 5: Solve for x
    x = 43,069,607,868.79/345,711.12
  6. Step 6: Final answer
    x = 124,582.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.