Home / 123,354.65-170,230.86-72,368.26

Finding the Fourth Proportional to 123,354.65, 170,230.86 and 72,368.26

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Solution

The fourth proportional to 123,354.65, 170,230.86 and 72,368.26 is: 99,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,354.65 : 170,230.86 = 72,368.26 : x
  2. Step 2: Convert to fraction form
    123,354.65/170,230.86 = 72,368.26/x
  3. Step 3: Cross multiply
    123,354.65x = 170,230.86 × 72,368.26
  4. Step 4: Simplify right side
    123,354.65x = 12,319,311,136.50
  5. Step 5: Solve for x
    x = 12,319,311,136.50/123,354.65
  6. Step 6: Final answer
    x = 99,869.05

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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.