Home / 112,457.84-155,130.39-72,126.72

Finding the Fourth Proportional to 112,457.84, 155,130.39 and 72,126.72

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Solution

The fourth proportional to 112,457.84, 155,130.39 and 72,126.72 is: 99,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,457.84 : 155,130.39 = 72,126.72 : x
  2. Step 2: Convert to fraction form
    112,457.84/155,130.39 = 72,126.72/x
  3. Step 3: Cross multiply
    112,457.84x = 155,130.39 × 72,126.72
  4. Step 4: Simplify right side
    112,457.84x = 11,189,046,203.02
  5. Step 5: Solve for x
    x = 11,189,046,203.02/112,457.84
  6. Step 6: Final answer
    x = 99,495.48

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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.