Home / 112,549.02-155,338.43-72,313.08

Finding the Fourth Proportional to 112,549.02, 155,338.43 and 72,313.08

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Solution

The fourth proportional to 112,549.02, 155,338.43 and 72,313.08 is: 99,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,549.02 : 155,338.43 = 72,313.08 : x
  2. Step 2: Convert to fraction form
    112,549.02/155,338.43 = 72,313.08/x
  3. Step 3: Cross multiply
    112,549.02x = 155,338.43 × 72,313.08
  4. Step 4: Simplify right side
    112,549.02x = 11,232,999,954.10
  5. Step 5: Solve for x
    x = 11,232,999,954.10/112,549.02
  6. Step 6: Final answer
    x = 99,805.40

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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.