Home / 112,641.92-155,445.36-64,903.76

Finding the Fourth Proportional to 112,641.92, 155,445.36 and 64,903.76

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Solution

The fourth proportional to 112,641.92, 155,445.36 and 64,903.76 is: 89,566.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,641.92 : 155,445.36 = 64,903.76 : x
  2. Step 2: Convert to fraction form
    112,641.92/155,445.36 = 64,903.76/x
  3. Step 3: Cross multiply
    112,641.92x = 155,445.36 × 64,903.76
  4. Step 4: Simplify right side
    112,641.92x = 10,088,988,338.55
  5. Step 5: Solve for x
    x = 10,088,988,338.55/112,641.92
  6. Step 6: Final answer
    x = 89,566.91

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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.