Home / 135,430.89-186,925.73-90,110.78

Finding the Fourth Proportional to 135,430.89, 186,925.73 and 90,110.78

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Solution

The fourth proportional to 135,430.89, 186,925.73 and 90,110.78 is: 124,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,430.89 : 186,925.73 = 90,110.78 : x
  2. Step 2: Convert to fraction form
    135,430.89/186,925.73 = 90,110.78/x
  3. Step 3: Cross multiply
    135,430.89x = 186,925.73 × 90,110.78
  4. Step 4: Simplify right side
    135,430.89x = 16,844,024,024.96
  5. Step 5: Solve for x
    x = 16,844,024,024.96/135,430.89
  6. Step 6: Final answer
    x = 124,373.58

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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.