Home / 142,439,875.60-213,659,813.40-140,928,221.20

Finding the Fourth Proportional to 142,439,875.60, 213,659,813.40 and 140,928,221.20

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Solution

The fourth proportional to 142,439,875.60, 213,659,813.40 and 140,928,221.20 is: 211,392,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,439,875.60 : 213,659,813.40 = 140,928,221.20 : x
  2. Step 2: Convert to fraction form
    142,439,875.60/213,659,813.40 = 140,928,221.20/x
  3. Step 3: Cross multiply
    142,439,875.60x = 213,659,813.40 × 140,928,221.20
  4. Step 4: Simplify right side
    142,439,875.60x = 30,110,697,444,385,924
  5. Step 5: Solve for x
    x = 30,110,697,444,385,924/142,439,875.60
  6. Step 6: Final answer
    x = 211,392,331.80

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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.