Home / 158,637.37-218,930.71-90,664.40

Finding the Fourth Proportional to 158,637.37, 218,930.71 and 90,664.40

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Solution

The fourth proportional to 158,637.37, 218,930.71 and 90,664.40 is: 125,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,637.37 : 218,930.71 = 90,664.40 : x
  2. Step 2: Convert to fraction form
    158,637.37/218,930.71 = 90,664.40/x
  3. Step 3: Cross multiply
    158,637.37x = 218,930.71 × 90,664.40
  4. Step 4: Simplify right side
    158,637.37x = 19,849,221,463.72
  5. Step 5: Solve for x
    x = 19,849,221,463.72/158,637.37
  6. Step 6: Final answer
    x = 125,123.24

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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.