Home / 142,675,870.40-196,909,509.60-84,729,118.40

Finding the Fourth Proportional to 142,675,870.40, 196,909,509.60 and 84,729,118.40

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Solution

The fourth proportional to 142,675,870.40, 196,909,509.60 and 84,729,118.40 is: 116,936,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,675,870.40 : 196,909,509.60 = 84,729,118.40 : x
  2. Step 2: Convert to fraction form
    142,675,870.40/196,909,509.60 = 84,729,118.40/x
  3. Step 3: Cross multiply
    142,675,870.40x = 196,909,509.60 × 84,729,118.40
  4. Step 4: Simplify right side
    142,675,870.40x = 16,683,969,152,984,338
  5. Step 5: Solve for x
    x = 16,683,969,152,984,338/142,675,870.40
  6. Step 6: Final answer
    x = 116,936,165.21

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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.