Home / 112,459.76-155,194.64-64,712.16

Finding the Fourth Proportional to 112,459.76, 155,194.64 and 64,712.16

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Solution

The fourth proportional to 112,459.76, 155,194.64 and 64,712.16 is: 89,302.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,459.76 : 155,194.64 = 64,712.16 : x
  2. Step 2: Convert to fraction form
    112,459.76/155,194.64 = 64,712.16/x
  3. Step 3: Cross multiply
    112,459.76x = 155,194.64 × 64,712.16
  4. Step 4: Simplify right side
    112,459.76x = 10,042,980,374.82
  5. Step 5: Solve for x
    x = 10,042,980,374.82/112,459.76
  6. Step 6: Final answer
    x = 89,302.88

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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.