Home / 181,981.60-272,875.20-76,681.60

Finding the Fourth Proportional to 181,981.60, 272,875.20 and 76,681.60

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Solution

The fourth proportional to 181,981.60, 272,875.20 and 76,681.60 is: 114,981.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,981.60 : 272,875.20 = 76,681.60 : x
  2. Step 2: Convert to fraction form
    181,981.60/272,875.20 = 76,681.60/x
  3. Step 3: Cross multiply
    181,981.60x = 272,875.20 × 76,681.60
  4. Step 4: Simplify right side
    181,981.60x = 20,924,506,936.32
  5. Step 5: Solve for x
    x = 20,924,506,936.32/181,981.60
  6. Step 6: Final answer
    x = 114,981.44

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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.