Home / 112,688.56-155,544.80-64,973.76

Finding the Fourth Proportional to 112,688.56, 155,544.80 and 64,973.76

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Solution

The fourth proportional to 112,688.56, 155,544.80 and 64,973.76 is: 89,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.56 : 155,544.80 = 64,973.76 : x
  2. Step 2: Convert to fraction form
    112,688.56/155,544.80 = 64,973.76/x
  3. Step 3: Cross multiply
    112,688.56x = 155,544.80 × 64,973.76
  4. Step 4: Simplify right side
    112,688.56x = 10,106,330,504.45
  5. Step 5: Solve for x
    x = 10,106,330,504.45/112,688.56
  6. Step 6: Final answer
    x = 89,683.73

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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.