Home / 112,457.58-155,130.04-72,126.48

Finding the Fourth Proportional to 112,457.58, 155,130.04 and 72,126.48

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Solution

The fourth proportional to 112,457.58, 155,130.04 and 72,126.48 is: 99,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,457.58 : 155,130.04 = 72,126.48 : x
  2. Step 2: Convert to fraction form
    112,457.58/155,130.04 = 72,126.48/x
  3. Step 3: Cross multiply
    112,457.58x = 155,130.04 × 72,126.48
  4. Step 4: Simplify right side
    112,457.58x = 11,188,983,727.46
  5. Step 5: Solve for x
    x = 11,188,983,727.46/112,457.58
  6. Step 6: Final answer
    x = 99,495.15

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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.