Home / 142,539,749.20-196,704,853.93-77,349,653.20

Finding the Fourth Proportional to 142,539,749.20, 196,704,853.93 and 77,349,653.20

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Solution

The fourth proportional to 142,539,749.20, 196,704,853.93 and 77,349,653.20 is: 106,742,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,749.20 : 196,704,853.93 = 77,349,653.20 : x
  2. Step 2: Convert to fraction form
    142,539,749.20/196,704,853.93 = 77,349,653.20/x
  3. Step 3: Cross multiply
    142,539,749.20x = 196,704,853.93 × 77,349,653.20
  4. Step 4: Simplify right side
    142,539,749.20x = 15,215,052,233,258,632
  5. Step 5: Solve for x
    x = 15,215,052,233,258,632/142,539,749.20
  6. Step 6: Final answer
    x = 106,742,521.43

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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.