Home / 145,037.95-217,622.18-78,400.06

Finding the Fourth Proportional to 145,037.95, 217,622.18 and 78,400.06

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Solution

The fourth proportional to 145,037.95, 217,622.18 and 78,400.06 is: 117,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,037.95 : 217,622.18 = 78,400.06 : x
  2. Step 2: Convert to fraction form
    145,037.95/217,622.18 = 78,400.06/x
  3. Step 3: Cross multiply
    145,037.95x = 217,622.18 × 78,400.06
  4. Step 4: Simplify right side
    145,037.95x = 17,061,591,621.28
  5. Step 5: Solve for x
    x = 17,061,591,621.28/145,037.95
  6. Step 6: Final answer
    x = 117,635.36

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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.