Home / 139,119.30-191,983.65-75,457.14

Finding the Fourth Proportional to 139,119.30, 191,983.65 and 75,457.14

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Solution

The fourth proportional to 139,119.30, 191,983.65 and 75,457.14 is: 104,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,119.30 : 191,983.65 = 75,457.14 : x
  2. Step 2: Convert to fraction form
    139,119.30/191,983.65 = 75,457.14/x
  3. Step 3: Cross multiply
    139,119.30x = 191,983.65 × 75,457.14
  4. Step 4: Simplify right side
    139,119.30x = 14,486,537,155.76
  5. Step 5: Solve for x
    x = 14,486,537,155.76/139,119.30
  6. Step 6: Final answer
    x = 104,130.32

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1.5x scale

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.