Home / 142,539,743.64-196,704,846.24-77,349,647.64

Finding the Fourth Proportional to 142,539,743.64, 196,704,846.24 and 77,349,647.64

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Solution

The fourth proportional to 142,539,743.64, 196,704,846.24 and 77,349,647.64 is: 106,742,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,743.64 : 196,704,846.24 = 77,349,647.64 : x
  2. Step 2: Convert to fraction form
    142,539,743.64/196,704,846.24 = 77,349,647.64/x
  3. Step 3: Cross multiply
    142,539,743.64x = 196,704,846.24 × 77,349,647.64
  4. Step 4: Simplify right side
    142,539,743.64x = 15,215,050,545,744,380
  5. Step 5: Solve for x
    x = 15,215,050,545,744,380/142,539,743.64
  6. Step 6: Final answer
    x = 106,742,513.75

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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.