Home / 139,981.05-210,058.65-56,875.05

Finding the Fourth Proportional to 139,981.05, 210,058.65 and 56,875.05

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Solution

The fourth proportional to 139,981.05, 210,058.65 and 56,875.05 is: 85,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,981.05 : 210,058.65 = 56,875.05 : x
  2. Step 2: Convert to fraction form
    139,981.05/210,058.65 = 56,875.05/x
  3. Step 3: Cross multiply
    139,981.05x = 210,058.65 × 56,875.05
  4. Step 4: Simplify right side
    139,981.05x = 11,947,096,221.68
  5. Step 5: Solve for x
    x = 11,947,096,221.68/139,981.05
  6. Step 6: Final answer
    x = 85,347.95

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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.