Home / 159,320.12-219,812.28-90,398.18

Finding the Fourth Proportional to 159,320.12, 219,812.28 and 90,398.18

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Solution

The fourth proportional to 159,320.12, 219,812.28 and 90,398.18 is: 124,721.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,320.12 : 219,812.28 = 90,398.18 : x
  2. Step 2: Convert to fraction form
    159,320.12/219,812.28 = 90,398.18/x
  3. Step 3: Cross multiply
    159,320.12x = 219,812.28 × 90,398.18
  4. Step 4: Simplify right side
    159,320.12x = 19,870,630,053.65
  5. Step 5: Solve for x
    x = 19,870,630,053.65/159,320.12
  6. Step 6: Final answer
    x = 124,721.41

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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.