Home / 130,724.72-180,400.08-74,136.08

Finding the Fourth Proportional to 130,724.72, 180,400.08 and 74,136.08

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Solution

The fourth proportional to 130,724.72, 180,400.08 and 74,136.08 is: 102,307.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,724.72 : 180,400.08 = 74,136.08 : x
  2. Step 2: Convert to fraction form
    130,724.72/180,400.08 = 74,136.08/x
  3. Step 3: Cross multiply
    130,724.72x = 180,400.08 × 74,136.08
  4. Step 4: Simplify right side
    130,724.72x = 13,374,154,762.89
  5. Step 5: Solve for x
    x = 13,374,154,762.89/130,724.72
  6. Step 6: Final answer
    x = 102,307.77

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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.