Home / 142,439,813.60-213,659,720.40-140,928,159.20

Finding the Fourth Proportional to 142,439,813.60, 213,659,720.40 and 140,928,159.20

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Solution

The fourth proportional to 142,439,813.60, 213,659,720.40 and 140,928,159.20 is: 211,392,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,439,813.60 : 213,659,720.40 = 140,928,159.20 : x
  2. Step 2: Convert to fraction form
    142,439,813.60/213,659,720.40 = 140,928,159.20/x
  3. Step 3: Cross multiply
    142,439,813.60x = 213,659,720.40 × 140,928,159.20
  4. Step 4: Simplify right side
    142,439,813.60x = 30,110,671,091,158,684
  5. Step 5: Solve for x
    x = 30,110,671,091,158,684/142,439,813.60
  6. Step 6: Final answer
    x = 211,392,238.80

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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.