Home / 155,429.40-232,816.05-138,808.20

Finding the Fourth Proportional to 155,429.40, 232,816.05 and 138,808.20

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Solution

The fourth proportional to 155,429.40, 232,816.05 and 138,808.20 is: 207,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,429.40 : 232,816.05 = 138,808.20 : x
  2. Step 2: Convert to fraction form
    155,429.40/232,816.05 = 138,808.20/x
  3. Step 3: Cross multiply
    155,429.40x = 232,816.05 × 138,808.20
  4. Step 4: Simplify right side
    155,429.40x = 32,316,776,831.61
  5. Step 5: Solve for x
    x = 32,316,776,831.61/155,429.40
  6. Step 6: Final answer
    x = 207,919.33

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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.