Home / 123,065.40-184,598.10-78,742.20

Finding the Fourth Proportional to 123,065.40, 184,598.10 and 78,742.20

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Solution

The fourth proportional to 123,065.40, 184,598.10 and 78,742.20 is: 118,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.40 : 184,598.10 = 78,742.20 : x
  2. Step 2: Convert to fraction form
    123,065.40/184,598.10 = 78,742.20/x
  3. Step 3: Cross multiply
    123,065.40x = 184,598.10 × 78,742.20
  4. Step 4: Simplify right side
    123,065.40x = 14,535,660,509.82
  5. Step 5: Solve for x
    x = 14,535,660,509.82/123,065.40
  6. Step 6: Final answer
    x = 118,113.30

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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.