Home / 121,987.02-182,935.02-42,002.40

Finding the Fourth Proportional to 121,987.02, 182,935.02 and 42,002.40

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Solution

The fourth proportional to 121,987.02, 182,935.02 and 42,002.40 is: 62,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,987.02 : 182,935.02 = 42,002.40 : x
  2. Step 2: Convert to fraction form
    121,987.02/182,935.02 = 42,002.40/x
  3. Step 3: Cross multiply
    121,987.02x = 182,935.02 × 42,002.40
  4. Step 4: Simplify right side
    121,987.02x = 7,683,709,884.05
  5. Step 5: Solve for x
    x = 7,683,709,884.05/121,987.02
  6. Step 6: Final answer
    x = 62,987.93

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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.