Home / 112,628.40-155,427.21-70,187.10

Finding the Fourth Proportional to 112,628.40, 155,427.21 and 70,187.10

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Solution

The fourth proportional to 112,628.40, 155,427.21 and 70,187.10 is: 96,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,628.40 : 155,427.21 = 70,187.10 : x
  2. Step 2: Convert to fraction form
    112,628.40/155,427.21 = 70,187.10/x
  3. Step 3: Cross multiply
    112,628.40x = 155,427.21 × 70,187.10
  4. Step 4: Simplify right side
    112,628.40x = 10,908,985,130.99
  5. Step 5: Solve for x
    x = 10,908,985,130.99/112,628.40
  6. Step 6: Final answer
    x = 96,858.21

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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.