Home / 124,128.12-171,267.66-70,400.76

Finding the Fourth Proportional to 124,128.12, 171,267.66 and 70,400.76

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Solution

The fourth proportional to 124,128.12, 171,267.66 and 70,400.76 is: 97,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,128.12 : 171,267.66 = 70,400.76 : x
  2. Step 2: Convert to fraction form
    124,128.12/171,267.66 = 70,400.76/x
  3. Step 3: Cross multiply
    124,128.12x = 171,267.66 × 70,400.76
  4. Step 4: Simplify right side
    124,128.12x = 12,057,373,427.42
  5. Step 5: Solve for x
    x = 12,057,373,427.42/124,128.12
  6. Step 6: Final answer
    x = 97,136.52

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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.