Home / 130,898.61-180,640.10-72,755.35

Finding the Fourth Proportional to 130,898.61, 180,640.10 and 72,755.35

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Solution

The fourth proportional to 130,898.61, 180,640.10 and 72,755.35 is: 100,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,898.61 : 180,640.10 = 72,755.35 : x
  2. Step 2: Convert to fraction form
    130,898.61/180,640.10 = 72,755.35/x
  3. Step 3: Cross multiply
    130,898.61x = 180,640.10 × 72,755.35
  4. Step 4: Simplify right side
    130,898.61x = 13,142,533,429.82
  5. Step 5: Solve for x
    x = 13,142,533,429.82/130,898.61
  6. Step 6: Final answer
    x = 100,402.39

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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.