Home / 137,428.23-189,567.13-90,860.93

Finding the Fourth Proportional to 137,428.23, 189,567.13 and 90,860.93

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Solution

The fourth proportional to 137,428.23, 189,567.13 and 90,860.93 is: 125,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,428.23 : 189,567.13 = 90,860.93 : x
  2. Step 2: Convert to fraction form
    137,428.23/189,567.13 = 90,860.93/x
  3. Step 3: Cross multiply
    137,428.23x = 189,567.13 × 90,860.93
  4. Step 4: Simplify right side
    137,428.23x = 17,224,245,729.23
  5. Step 5: Solve for x
    x = 17,224,245,729.23/137,428.23
  6. Step 6: Final answer
    x = 125,332.66

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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.