Home / 158,890.13-219,215.01-89,970.20

Finding the Fourth Proportional to 158,890.13, 219,215.01 and 89,970.20

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Solution

The fourth proportional to 158,890.13, 219,215.01 and 89,970.20 is: 124,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,890.13 : 219,215.01 = 89,970.20 : x
  2. Step 2: Convert to fraction form
    158,890.13/219,215.01 = 89,970.20/x
  3. Step 3: Cross multiply
    158,890.13x = 219,215.01 × 89,970.20
  4. Step 4: Simplify right side
    158,890.13x = 19,722,816,746.78
  5. Step 5: Solve for x
    x = 19,722,816,746.78/158,890.13
  6. Step 6: Final answer
    x = 124,128.65

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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.