Home / 185,931.40-278,897.10-105,887.20

Finding the Fourth Proportional to 185,931.40, 278,897.10 and 105,887.20

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Solution

The fourth proportional to 185,931.40, 278,897.10 and 105,887.20 is: 158,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,931.40 : 278,897.10 = 105,887.20 : x
  2. Step 2: Convert to fraction form
    185,931.40/278,897.10 = 105,887.20/x
  3. Step 3: Cross multiply
    185,931.40x = 278,897.10 × 105,887.20
  4. Step 4: Simplify right side
    185,931.40x = 29,531,633,007.12
  5. Step 5: Solve for x
    x = 29,531,633,007.12/185,931.40
  6. Step 6: Final answer
    x = 158,830.80

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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.