Home / 158,307.89-218,477.39-90,309.26

Finding the Fourth Proportional to 158,307.89, 218,477.39 and 90,309.26

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Solution

The fourth proportional to 158,307.89, 218,477.39 and 90,309.26 is: 124,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,307.89 : 218,477.39 = 90,309.26 : x
  2. Step 2: Convert to fraction form
    158,307.89/218,477.39 = 90,309.26/x
  3. Step 3: Cross multiply
    158,307.89x = 218,477.39 × 90,309.26
  4. Step 4: Simplify right side
    158,307.89x = 19,730,531,512.28
  5. Step 5: Solve for x
    x = 19,730,531,512.28/158,307.89
  6. Step 6: Final answer
    x = 124,633.92

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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.