Home / 112,405.64-155,192.10-72,136.76

Finding the Fourth Proportional to 112,405.64, 155,192.10 and 72,136.76

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Solution

The fourth proportional to 112,405.64, 155,192.10 and 72,136.76 is: 99,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,405.64 : 155,192.10 = 72,136.76 : x
  2. Step 2: Convert to fraction form
    112,405.64/155,192.10 = 72,136.76/x
  3. Step 3: Cross multiply
    112,405.64x = 155,192.10 × 72,136.76
  4. Step 4: Simplify right side
    112,405.64x = 11,195,055,271.60
  5. Step 5: Solve for x
    x = 11,195,055,271.60/112,405.64
  6. Step 6: Final answer
    x = 99,595.14

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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.