Home / 113,020.16-155,980.31-72,221.99

Finding the Fourth Proportional to 113,020.16, 155,980.31 and 72,221.99

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Solution

The fourth proportional to 113,020.16, 155,980.31 and 72,221.99 is: 99,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.16 : 155,980.31 = 72,221.99 : x
  2. Step 2: Convert to fraction form
    113,020.16/155,980.31 = 72,221.99/x
  3. Step 3: Cross multiply
    113,020.16x = 155,980.31 × 72,221.99
  4. Step 4: Simplify right side
    113,020.16x = 11,265,207,248.01
  5. Step 5: Solve for x
    x = 11,265,207,248.01/113,020.16
  6. Step 6: Final answer
    x = 99,674.32

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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.