Home / 142,539,656.40-196,704,725.85-77,349,560.40

Finding the Fourth Proportional to 142,539,656.40, 196,704,725.85 and 77,349,560.40

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Solution

The fourth proportional to 142,539,656.40, 196,704,725.85 and 77,349,560.40 is: 106,742,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,656.40 : 196,704,725.85 = 77,349,560.40 : x
  2. Step 2: Convert to fraction form
    142,539,656.40/196,704,725.85 = 77,349,560.40/x
  3. Step 3: Cross multiply
    142,539,656.40x = 196,704,725.85 × 77,349,560.40
  4. Step 4: Simplify right side
    142,539,656.40x = 15,215,024,073,100,018
  5. Step 5: Solve for x
    x = 15,215,024,073,100,018/142,539,656.40
  6. Step 6: Final answer
    x = 106,742,393.36

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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.