Home / 142,009,434-213,145,079.36-72,028,780.08

Finding the Fourth Proportional to 142,009,434, 213,145,079.36 and 72,028,780.08

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Solution

The fourth proportional to 142,009,434, 213,145,079.36 and 72,028,780.08 is: 108,109,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,009,434 : 213,145,079.36 = 72,028,780.08 : x
  2. Step 2: Convert to fraction form
    142,009,434/213,145,079.36 = 72,028,780.08/x
  3. Step 3: Cross multiply
    142,009,434x = 213,145,079.36 × 72,028,780.08
  4. Step 4: Simplify right side
    142,009,434x = 15,352,580,046,355,588
  5. Step 5: Solve for x
    x = 15,352,580,046,355,588/142,009,434
  6. Step 6: Final answer
    x = 108,109,578.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.