Home / 139,006.47-208,434.75-74,998.92

Finding the Fourth Proportional to 139,006.47, 208,434.75 and 74,998.92

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Solution

The fourth proportional to 139,006.47, 208,434.75 and 74,998.92 is: 112,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,006.47 : 208,434.75 = 74,998.92 : x
  2. Step 2: Convert to fraction form
    139,006.47/208,434.75 = 74,998.92/x
  3. Step 3: Cross multiply
    139,006.47x = 208,434.75 × 74,998.92
  4. Step 4: Simplify right side
    139,006.47x = 15,632,381,140.47
  5. Step 5: Solve for x
    x = 15,632,381,140.47/139,006.47
  6. Step 6: Final answer
    x = 112,457.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.