Home / 88,533.10-133,058.85-77,128.30

Finding the Fourth Proportional to 88,533.10, 133,058.85 and 77,128.30

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Solution

The fourth proportional to 88,533.10, 133,058.85 and 77,128.30 is: 115,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,533.10 : 133,058.85 = 77,128.30 : x
  2. Step 2: Convert to fraction form
    88,533.10/133,058.85 = 77,128.30/x
  3. Step 3: Cross multiply
    88,533.10x = 133,058.85 × 77,128.30
  4. Step 4: Simplify right side
    88,533.10x = 10,262,602,900.46
  5. Step 5: Solve for x
    x = 10,262,602,900.46/88,533.10
  6. Step 6: Final answer
    x = 115,918.26

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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.