Home / 125,280.09-187,931.09-31,785.84

Finding the Fourth Proportional to 125,280.09, 187,931.09 and 31,785.84

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Solution

The fourth proportional to 125,280.09, 187,931.09 and 31,785.84 is: 47,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,280.09 : 187,931.09 = 31,785.84 : x
  2. Step 2: Convert to fraction form
    125,280.09/187,931.09 = 31,785.84/x
  3. Step 3: Cross multiply
    125,280.09x = 187,931.09 × 31,785.84
  4. Step 4: Simplify right side
    125,280.09x = 5,973,548,341.97
  5. Step 5: Solve for x
    x = 5,973,548,341.97/125,280.09
  6. Step 6: Final answer
    x = 47,681.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.