Home / 112,905.06-155,808.80-65,158.40

Finding the Fourth Proportional to 112,905.06, 155,808.80 and 65,158.40

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Solution

The fourth proportional to 112,905.06, 155,808.80 and 65,158.40 is: 89,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,905.06 : 155,808.80 = 65,158.40 : x
  2. Step 2: Convert to fraction form
    112,905.06/155,808.80 = 65,158.40/x
  3. Step 3: Cross multiply
    112,905.06x = 155,808.80 × 65,158.40
  4. Step 4: Simplify right side
    112,905.06x = 10,152,252,113.92
  5. Step 5: Solve for x
    x = 10,152,252,113.92/112,905.06
  6. Step 6: Final answer
    x = 89,918.49

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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.