Home / 138,457.32-191,071.10-74,795.12

Finding the Fourth Proportional to 138,457.32, 191,071.10 and 74,795.12

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Solution

The fourth proportional to 138,457.32, 191,071.10 and 74,795.12 is: 103,217.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,457.32 : 191,071.10 = 74,795.12 : x
  2. Step 2: Convert to fraction form
    138,457.32/191,071.10 = 74,795.12/x
  3. Step 3: Cross multiply
    138,457.32x = 191,071.10 × 74,795.12
  4. Step 4: Simplify right side
    138,457.32x = 14,291,184,523.70
  5. Step 5: Solve for x
    x = 14,291,184,523.70/138,457.32
  6. Step 6: Final answer
    x = 103,217.26

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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.