Home / 134,380.15-185,445.99-77,018.23

Finding the Fourth Proportional to 134,380.15, 185,445.99 and 77,018.23

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Solution

The fourth proportional to 134,380.15, 185,445.99 and 77,018.23 is: 106,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,380.15 : 185,445.99 = 77,018.23 : x
  2. Step 2: Convert to fraction form
    134,380.15/185,445.99 = 77,018.23/x
  3. Step 3: Cross multiply
    134,380.15x = 185,445.99 × 77,018.23
  4. Step 4: Simplify right side
    134,380.15x = 14,282,720,983.17
  5. Step 5: Solve for x
    x = 14,282,720,983.17/134,380.15
  6. Step 6: Final answer
    x = 106,285.95

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1.5x scale

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.