Home / 78,130.02-117,094.86-38,158.14

Finding the Fourth Proportional to 78,130.02, 117,094.86 and 38,158.14

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Solution

The fourth proportional to 78,130.02, 117,094.86 and 38,158.14 is: 57,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,130.02 : 117,094.86 = 38,158.14 : x
  2. Step 2: Convert to fraction form
    78,130.02/117,094.86 = 38,158.14/x
  3. Step 3: Cross multiply
    78,130.02x = 117,094.86 × 38,158.14
  4. Step 4: Simplify right side
    78,130.02x = 4,468,122,061.16
  5. Step 5: Solve for x
    x = 4,468,122,061.16/78,130.02
  6. Step 6: Final answer
    x = 57,188.29

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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.