Home / 139,354,102.36-209,039,289.18-42,312,975.76

Finding the Fourth Proportional to 139,354,102.36, 209,039,289.18 and 42,312,975.76

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Solution

The fourth proportional to 139,354,102.36, 209,039,289.18 and 42,312,975.76 is: 63,471,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,354,102.36 : 209,039,289.18 = 42,312,975.76 : x
  2. Step 2: Convert to fraction form
    139,354,102.36/209,039,289.18 = 42,312,975.76/x
  3. Step 3: Cross multiply
    139,354,102.36x = 209,039,289.18 × 42,312,975.76
  4. Step 4: Simplify right side
    139,354,102.36x = 8,845,074,375,960,970
  5. Step 5: Solve for x
    x = 8,845,074,375,960,970/139,354,102.36
  6. Step 6: Final answer
    x = 63,471,933.92

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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.