Home / 102,139.48-153,352.71-52,255.36

Finding the Fourth Proportional to 102,139.48, 153,352.71 and 52,255.36

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Solution

The fourth proportional to 102,139.48, 153,352.71 and 52,255.36 is: 78,456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,139.48 : 153,352.71 = 52,255.36 : x
  2. Step 2: Convert to fraction form
    102,139.48/153,352.71 = 52,255.36/x
  3. Step 3: Cross multiply
    102,139.48x = 153,352.71 × 52,255.36
  4. Step 4: Simplify right side
    102,139.48x = 8,013,501,068.03
  5. Step 5: Solve for x
    x = 8,013,501,068.03/102,139.48
  6. Step 6: Final answer
    x = 78,456.45

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1.5x scale

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.