Home / 128,768,335.20-193,152,502.80-42,520,053.60

Finding the Fourth Proportional to 128,768,335.20, 193,152,502.80 and 42,520,053.60

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Solution

The fourth proportional to 128,768,335.20, 193,152,502.80 and 42,520,053.60 is: 63,780,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,768,335.20 : 193,152,502.80 = 42,520,053.60 : x
  2. Step 2: Convert to fraction form
    128,768,335.20/193,152,502.80 = 42,520,053.60/x
  3. Step 3: Cross multiply
    128,768,335.20x = 193,152,502.80 × 42,520,053.60
  4. Step 4: Simplify right side
    128,768,335.20x = 8,212,854,772,030,151
  5. Step 5: Solve for x
    x = 8,212,854,772,030,151/128,768,335.20
  6. Step 6: Final answer
    x = 63,780,080.40

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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.