Home / 155,831,015.94-215,053,132.05-86,215,263

Finding the Fourth Proportional to 155,831,015.94, 215,053,132.05 and 86,215,263

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Solution

The fourth proportional to 155,831,015.94, 215,053,132.05 and 86,215,263 is: 118,980,565.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,831,015.94 : 215,053,132.05 = 86,215,263 : x
  2. Step 2: Convert to fraction form
    155,831,015.94/215,053,132.05 = 86,215,263/x
  3. Step 3: Cross multiply
    155,831,015.94x = 215,053,132.05 × 86,215,263
  4. Step 4: Simplify right side
    155,831,015.94x = 18,540,862,338,664,480
  5. Step 5: Solve for x
    x = 18,540,862,338,664,480/155,831,015.94
  6. Step 6: Final answer
    x = 118,980,565.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.