Home / 153,995.46-212,507.39-86,012.12

Finding the Fourth Proportional to 153,995.46, 212,507.39 and 86,012.12

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Solution

The fourth proportional to 153,995.46, 212,507.39 and 86,012.12 is: 118,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,995.46 : 212,507.39 = 86,012.12 : x
  2. Step 2: Convert to fraction form
    153,995.46/212,507.39 = 86,012.12/x
  3. Step 3: Cross multiply
    153,995.46x = 212,507.39 × 86,012.12
  4. Step 4: Simplify right side
    153,995.46x = 18,278,209,636.97
  5. Step 5: Solve for x
    x = 18,278,209,636.97/153,995.46
  6. Step 6: Final answer
    x = 118,693.17

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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.