Home / 112,370.40-155,036.16-64,606.56

Finding the Fourth Proportional to 112,370.40, 155,036.16 and 64,606.56

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Solution

The fourth proportional to 112,370.40, 155,036.16 and 64,606.56 is: 89,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,370.40 : 155,036.16 = 64,606.56 : x
  2. Step 2: Convert to fraction form
    112,370.40/155,036.16 = 64,606.56/x
  3. Step 3: Cross multiply
    112,370.40x = 155,036.16 × 64,606.56
  4. Step 4: Simplify right side
    112,370.40x = 10,016,352,973.21
  5. Step 5: Solve for x
    x = 10,016,352,973.21/112,370.40
  6. Step 6: Final answer
    x = 89,136.93

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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.