Home / 112,431.30-155,155.10-62,130.30

Finding the Fourth Proportional to 112,431.30, 155,155.10 and 62,130.30

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Solution

The fourth proportional to 112,431.30, 155,155.10 and 62,130.30 is: 85,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,431.30 : 155,155.10 = 62,130.30 : x
  2. Step 2: Convert to fraction form
    112,431.30/155,155.10 = 62,130.30/x
  3. Step 3: Cross multiply
    112,431.30x = 155,155.10 × 62,130.30
  4. Step 4: Simplify right side
    112,431.30x = 9,639,832,598.88
  5. Step 5: Solve for x
    x = 9,639,832,598.88/112,431.30
  6. Step 6: Final answer
    x = 85,739.76

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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.