Home / 139,981.32-193,174.05-76,319.10

Finding the Fourth Proportional to 139,981.32, 193,174.05 and 76,319.10

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Solution

The fourth proportional to 139,981.32, 193,174.05 and 76,319.10 is: 105,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,981.32 : 193,174.05 = 76,319.10 : x
  2. Step 2: Convert to fraction form
    139,981.32/193,174.05 = 76,319.10/x
  3. Step 3: Cross multiply
    139,981.32x = 193,174.05 × 76,319.10
  4. Step 4: Simplify right side
    139,981.32x = 14,742,869,639.36
  5. Step 5: Solve for x
    x = 14,742,869,639.36/139,981.32
  6. Step 6: Final answer
    x = 105,320.26

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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.