Home / 130,531.02-180,136.47-73,942.39

Finding the Fourth Proportional to 130,531.02, 180,136.47 and 73,942.39

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Solution

The fourth proportional to 130,531.02, 180,136.47 and 73,942.39 is: 102,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,531.02 : 180,136.47 = 73,942.39 : x
  2. Step 2: Convert to fraction form
    130,531.02/180,136.47 = 73,942.39/x
  3. Step 3: Cross multiply
    130,531.02x = 180,136.47 × 73,942.39
  4. Step 4: Simplify right side
    130,531.02x = 13,319,721,117.96
  5. Step 5: Solve for x
    x = 13,319,721,117.96/130,531.02
  6. Step 6: Final answer
    x = 102,042.57

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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.