Home / 210,271.04-290,130.72-120,829.76

Finding the Fourth Proportional to 210,271.04, 290,130.72 and 120,829.76

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Solution

The fourth proportional to 210,271.04, 290,130.72 and 120,829.76 is: 166,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,271.04 : 290,130.72 = 120,829.76 : x
  2. Step 2: Convert to fraction form
    210,271.04/290,130.72 = 120,829.76/x
  3. Step 3: Cross multiply
    210,271.04x = 290,130.72 × 120,829.76
  4. Step 4: Simplify right side
    210,271.04x = 35,056,425,266.23
  5. Step 5: Solve for x
    x = 35,056,425,266.23/210,271.04
  6. Step 6: Final answer
    x = 166,720.18

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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.