Home / 145,450,804.16-200,720,456.15-79,372,426.69

Finding the Fourth Proportional to 145,450,804.16, 200,720,456.15 and 79,372,426.69

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Solution

The fourth proportional to 145,450,804.16, 200,720,456.15 and 79,372,426.69 is: 109,533,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,450,804.16 : 200,720,456.15 = 79,372,426.69 : x
  2. Step 2: Convert to fraction form
    145,450,804.16/200,720,456.15 = 79,372,426.69/x
  3. Step 3: Cross multiply
    145,450,804.16x = 200,720,456.15 × 79,372,426.69
  4. Step 4: Simplify right side
    145,450,804.16x = 15,931,669,690,949,234
  5. Step 5: Solve for x
    x = 15,931,669,690,949,234/145,450,804.16
  6. Step 6: Final answer
    x = 109,533,046.47

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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.