Home / 112,412.18-155,160.08-64,680.90

Finding the Fourth Proportional to 112,412.18, 155,160.08 and 64,680.90

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Solution

The fourth proportional to 112,412.18, 155,160.08 and 64,680.90 is: 89,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,412.18 : 155,160.08 = 64,680.90 : x
  2. Step 2: Convert to fraction form
    112,412.18/155,160.08 = 64,680.90/x
  3. Step 3: Cross multiply
    112,412.18x = 155,160.08 × 64,680.90
  4. Step 4: Simplify right side
    112,412.18x = 10,035,893,618.47
  5. Step 5: Solve for x
    x = 10,035,893,618.47/112,412.18
  6. Step 6: Final answer
    x = 89,277.64

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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.