Home / 158,078.80-218,154.36-90,106.03

Finding the Fourth Proportional to 158,078.80, 218,154.36 and 90,106.03

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Solution

The fourth proportional to 158,078.80, 218,154.36 and 90,106.03 is: 124,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,078.80 : 218,154.36 = 90,106.03 : x
  2. Step 2: Convert to fraction form
    158,078.80/218,154.36 = 90,106.03/x
  3. Step 3: Cross multiply
    158,078.80x = 218,154.36 × 90,106.03
  4. Step 4: Simplify right side
    158,078.80x = 19,657,023,306.79
  5. Step 5: Solve for x
    x = 19,657,023,306.79/158,078.80
  6. Step 6: Final answer
    x = 124,349.52

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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.