Home / 125,931.40-188,897.10-102,311.80

Finding the Fourth Proportional to 125,931.40, 188,897.10 and 102,311.80

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Solution

The fourth proportional to 125,931.40, 188,897.10 and 102,311.80 is: 153,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931.40 : 188,897.10 = 102,311.80 : x
  2. Step 2: Convert to fraction form
    125,931.40/188,897.10 = 102,311.80/x
  3. Step 3: Cross multiply
    125,931.40x = 188,897.10 × 102,311.80
  4. Step 4: Simplify right side
    125,931.40x = 19,326,402,315.78
  5. Step 5: Solve for x
    x = 19,326,402,315.78/125,931.40
  6. Step 6: Final answer
    x = 153,467.70

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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.