Home / 142,539,657.90-196,704,727.92-77,349,561.90

Finding the Fourth Proportional to 142,539,657.90, 196,704,727.92 and 77,349,561.90

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Solution

The fourth proportional to 142,539,657.90, 196,704,727.92 and 77,349,561.90 is: 106,742,395.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,657.90 : 196,704,727.92 = 77,349,561.90 : x
  2. Step 2: Convert to fraction form
    142,539,657.90/196,704,727.92 = 77,349,561.90/x
  3. Step 3: Cross multiply
    142,539,657.90x = 196,704,727.92 × 77,349,561.90
  4. Step 4: Simplify right side
    142,539,657.90x = 15,215,024,528,270,698
  5. Step 5: Solve for x
    x = 15,215,024,528,270,698/142,539,657.90
  6. Step 6: Final answer
    x = 106,742,395.43

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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.