Home / 130,916.92-180,656.70-77,199.40

Finding the Fourth Proportional to 130,916.92, 180,656.70 and 77,199.40

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Solution

The fourth proportional to 130,916.92, 180,656.70 and 77,199.40 is: 106,530.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,916.92 : 180,656.70 = 77,199.40 : x
  2. Step 2: Convert to fraction form
    130,916.92/180,656.70 = 77,199.40/x
  3. Step 3: Cross multiply
    130,916.92x = 180,656.70 × 77,199.40
  4. Step 4: Simplify right side
    130,916.92x = 13,946,588,845.98
  5. Step 5: Solve for x
    x = 13,946,588,845.98/130,916.92
  6. Step 6: Final answer
    x = 106,530.07

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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.