Home / 142,521,856.80-213,782,785.20-122,114,522.40

Finding the Fourth Proportional to 142,521,856.80, 213,782,785.20 and 122,114,522.40

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Solution

The fourth proportional to 142,521,856.80, 213,782,785.20 and 122,114,522.40 is: 183,171,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,521,856.80 : 213,782,785.20 = 122,114,522.40 : x
  2. Step 2: Convert to fraction form
    142,521,856.80/213,782,785.20 = 122,114,522.40/x
  3. Step 3: Cross multiply
    142,521,856.80x = 213,782,785.20 × 122,114,522.40
  4. Step 4: Simplify right side
    142,521,856.80x = 26,105,982,712,039,788
  5. Step 5: Solve for x
    x = 26,105,982,712,039,788/142,521,856.80
  6. Step 6: Final answer
    x = 183,171,783.60

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1.5x scale

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.