Home / 142,539,642.90-196,704,707.22-77,349,546.90

Finding the Fourth Proportional to 142,539,642.90, 196,704,707.22 and 77,349,546.90

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Solution

The fourth proportional to 142,539,642.90, 196,704,707.22 and 77,349,546.90 is: 106,742,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,642.90 : 196,704,707.22 = 77,349,546.90 : x
  2. Step 2: Convert to fraction form
    142,539,642.90/196,704,707.22 = 77,349,546.90/x
  3. Step 3: Cross multiply
    142,539,642.90x = 196,704,707.22 × 77,349,546.90
  4. Step 4: Simplify right side
    142,539,642.90x = 15,215,019,976,564,160
  5. Step 5: Solve for x
    x = 15,215,019,976,564,160/142,539,642.90
  6. Step 6: Final answer
    x = 106,742,374.73

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1.5x scale

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.