Home / 138,657.40-191,346.62-74,995.04

Finding the Fourth Proportional to 138,657.40, 191,346.62 and 74,995.04

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Solution

The fourth proportional to 138,657.40, 191,346.62 and 74,995.04 is: 103,492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,657.40 : 191,346.62 = 74,995.04 : x
  2. Step 2: Convert to fraction form
    138,657.40/191,346.62 = 74,995.04/x
  3. Step 3: Cross multiply
    138,657.40x = 191,346.62 × 74,995.04
  4. Step 4: Simplify right side
    138,657.40x = 14,350,047,420.76
  5. Step 5: Solve for x
    x = 14,350,047,420.76/138,657.40
  6. Step 6: Final answer
    x = 103,492.84

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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.