Home / 86,830.12-119,366.05-74,686.20

Finding the Fourth Proportional to 86,830.12, 119,366.05 and 74,686.20

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Solution

The fourth proportional to 86,830.12, 119,366.05 and 74,686.20 is: 102,671.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,830.12 : 119,366.05 = 74,686.20 : x
  2. Step 2: Convert to fraction form
    86,830.12/119,366.05 = 74,686.20/x
  3. Step 3: Cross multiply
    86,830.12x = 119,366.05 × 74,686.20
  4. Step 4: Simplify right side
    86,830.12x = 8,914,996,683.51
  5. Step 5: Solve for x
    x = 8,914,996,683.51/86,830.12
  6. Step 6: Final answer
    x = 102,671.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.