Home / 142,136.13-196,144.93-81,705.22

Finding the Fourth Proportional to 142,136.13, 196,144.93 and 81,705.22

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Solution

The fourth proportional to 142,136.13, 196,144.93 and 81,705.22 is: 112,751.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,136.13 : 196,144.93 = 81,705.22 : x
  2. Step 2: Convert to fraction form
    142,136.13/196,144.93 = 81,705.22/x
  3. Step 3: Cross multiply
    142,136.13x = 196,144.93 × 81,705.22
  4. Step 4: Simplify right side
    142,136.13x = 16,026,064,657.53
  5. Step 5: Solve for x
    x = 16,026,064,657.53/142,136.13
  6. Step 6: Final answer
    x = 112,751.52

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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.