Home / 152,485.28-210,429.68-85,417.12

Finding the Fourth Proportional to 152,485.28, 210,429.68 and 85,417.12

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Solution

The fourth proportional to 152,485.28, 210,429.68 and 85,417.12 is: 117,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,485.28 : 210,429.68 = 85,417.12 : x
  2. Step 2: Convert to fraction form
    152,485.28/210,429.68 = 85,417.12/x
  3. Step 3: Cross multiply
    152,485.28x = 210,429.68 × 85,417.12
  4. Step 4: Simplify right side
    152,485.28x = 17,974,297,228.12
  5. Step 5: Solve for x
    x = 17,974,297,228.12/152,485.28
  6. Step 6: Final answer
    x = 117,875.62

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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.