Home / 112,534.80-155,317.12-64,815.76

Finding the Fourth Proportional to 112,534.80, 155,317.12 and 64,815.76

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Solution

The fourth proportional to 112,534.80, 155,317.12 and 64,815.76 is: 89,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,534.80 : 155,317.12 = 64,815.76 : x
  2. Step 2: Convert to fraction form
    112,534.80/155,317.12 = 64,815.76/x
  3. Step 3: Cross multiply
    112,534.80x = 155,317.12 × 64,815.76
  4. Step 4: Simplify right side
    112,534.80x = 10,066,997,173.81
  5. Step 5: Solve for x
    x = 10,066,997,173.81/112,534.80
  6. Step 6: Final answer
    x = 89,456.75

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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.