Home / 142,521,973.80-213,782,960.70-122,114,639.40

Finding the Fourth Proportional to 142,521,973.80, 213,782,960.70 and 122,114,639.40

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Solution

The fourth proportional to 142,521,973.80, 213,782,960.70 and 122,114,639.40 is: 183,171,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,521,973.80 : 213,782,960.70 = 122,114,639.40 : x
  2. Step 2: Convert to fraction form
    142,521,973.80/213,782,960.70 = 122,114,639.40/x
  3. Step 3: Cross multiply
    142,521,973.80x = 213,782,960.70 × 122,114,639.40
  4. Step 4: Simplify right side
    142,521,973.80x = 26,106,029,155,744,872
  5. Step 5: Solve for x
    x = 26,106,029,155,744,872/142,521,973.80
  6. Step 6: Final answer
    x = 183,171,959.10

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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.