Home / 153,938.32-212,374.92-103,670.80

Finding the Fourth Proportional to 153,938.32, 212,374.92 and 103,670.80

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Solution

The fourth proportional to 153,938.32, 212,374.92 and 103,670.80 is: 143,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,938.32 : 212,374.92 = 103,670.80 : x
  2. Step 2: Convert to fraction form
    153,938.32/212,374.92 = 103,670.80/x
  3. Step 3: Cross multiply
    153,938.32x = 212,374.92 × 103,670.80
  4. Step 4: Simplify right side
    153,938.32x = 22,017,077,856.34
  5. Step 5: Solve for x
    x = 22,017,077,856.34/153,938.32
  6. Step 6: Final answer
    x = 143,025.32

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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.