Home / 130,724.28-180,398.34-74,136.06

Finding the Fourth Proportional to 130,724.28, 180,398.34 and 74,136.06

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Solution

The fourth proportional to 130,724.28, 180,398.34 and 74,136.06 is: 102,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,724.28 : 180,398.34 = 74,136.06 : x
  2. Step 2: Convert to fraction form
    130,724.28/180,398.34 = 74,136.06/x
  3. Step 3: Cross multiply
    130,724.28x = 180,398.34 × 74,136.06
  4. Step 4: Simplify right side
    130,724.28x = 13,374,022,158.14
  5. Step 5: Solve for x
    x = 13,374,022,158.14/130,724.28
  6. Step 6: Final answer
    x = 102,307.10

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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.