Home / 125,918.40-188,877.60-69,931.20

Finding the Fourth Proportional to 125,918.40, 188,877.60 and 69,931.20

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Solution

The fourth proportional to 125,918.40, 188,877.60 and 69,931.20 is: 104,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,918.40 : 188,877.60 = 69,931.20 : x
  2. Step 2: Convert to fraction form
    125,918.40/188,877.60 = 69,931.20/x
  3. Step 3: Cross multiply
    125,918.40x = 188,877.60 × 69,931.20
  4. Step 4: Simplify right side
    125,918.40x = 13,208,437,221.12
  5. Step 5: Solve for x
    x = 13,208,437,221.12/125,918.40
  6. Step 6: Final answer
    x = 104,896.80

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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.