Home / 128,725,079.60-193,087,619.40-47,929,329.20

Finding the Fourth Proportional to 128,725,079.60, 193,087,619.40 and 47,929,329.20

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Solution

The fourth proportional to 128,725,079.60, 193,087,619.40 and 47,929,329.20 is: 71,893,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,725,079.60 : 193,087,619.40 = 47,929,329.20 : x
  2. Step 2: Convert to fraction form
    128,725,079.60/193,087,619.40 = 47,929,329.20/x
  3. Step 3: Cross multiply
    128,725,079.60x = 193,087,619.40 × 47,929,329.20
  4. Step 4: Simplify right side
    128,725,079.60x = 9,254,560,074,666,908
  5. Step 5: Solve for x
    x = 9,254,560,074,666,908/128,725,079.60
  6. Step 6: Final answer
    x = 71,893,993.80

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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.