Home / 125,136.21-172,690.77-71,420.16

Finding the Fourth Proportional to 125,136.21, 172,690.77 and 71,420.16

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Solution

The fourth proportional to 125,136.21, 172,690.77 and 71,420.16 is: 98,561.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,136.21 : 172,690.77 = 71,420.16 : x
  2. Step 2: Convert to fraction form
    125,136.21/172,690.77 = 71,420.16/x
  3. Step 3: Cross multiply
    125,136.21x = 172,690.77 × 71,420.16
  4. Step 4: Simplify right side
    125,136.21x = 12,333,602,423.92
  5. Step 5: Solve for x
    x = 12,333,602,423.92/125,136.21
  6. Step 6: Final answer
    x = 98,561.42

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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.