Home / 153,939.32-212,376.30-103,671.80

Finding the Fourth Proportional to 153,939.32, 212,376.30 and 103,671.80

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Solution

The fourth proportional to 153,939.32, 212,376.30 and 103,671.80 is: 143,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,939.32 : 212,376.30 = 103,671.80 : x
  2. Step 2: Convert to fraction form
    153,939.32/212,376.30 = 103,671.80/x
  3. Step 3: Cross multiply
    153,939.32x = 212,376.30 × 103,671.80
  4. Step 4: Simplify right side
    153,939.32x = 22,017,433,298.34
  5. Step 5: Solve for x
    x = 22,017,433,298.34/153,939.32
  6. Step 6: Final answer
    x = 143,026.70

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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.