Home / 142,539,680.40-196,704,758.97-77,349,584.40

Finding the Fourth Proportional to 142,539,680.40, 196,704,758.97 and 77,349,584.40

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Solution

The fourth proportional to 142,539,680.40, 196,704,758.97 and 77,349,584.40 is: 106,742,426.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,680.40 : 196,704,758.97 = 77,349,584.40 : x
  2. Step 2: Convert to fraction form
    142,539,680.40/196,704,758.97 = 77,349,584.40/x
  3. Step 3: Cross multiply
    142,539,680.40x = 196,704,758.97 × 77,349,584.40
  4. Step 4: Simplify right side
    142,539,680.40x = 15,215,031,355,831,674
  5. Step 5: Solve for x
    x = 15,215,031,355,831,674/142,539,680.40
  6. Step 6: Final answer
    x = 106,742,426.48

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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.