Home / 130,883.61-196,068.36-86,374.53

Finding the Fourth Proportional to 130,883.61, 196,068.36 and 86,374.53

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Solution

The fourth proportional to 130,883.61, 196,068.36 and 86,374.53 is: 129,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,883.61 : 196,068.36 = 86,374.53 : x
  2. Step 2: Convert to fraction form
    130,883.61/196,068.36 = 86,374.53/x
  3. Step 3: Cross multiply
    130,883.61x = 196,068.36 × 86,374.53
  4. Step 4: Simplify right side
    130,883.61x = 16,935,312,442.87
  5. Step 5: Solve for x
    x = 16,935,312,442.87/130,883.61
  6. Step 6: Final answer
    x = 129,392.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.