Home / 102,670.40-141,683.65-57,349.01

Finding the Fourth Proportional to 102,670.40, 141,683.65 and 57,349.01

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Solution

The fourth proportional to 102,670.40, 141,683.65 and 57,349.01 is: 79,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,670.40 : 141,683.65 = 57,349.01 : x
  2. Step 2: Convert to fraction form
    102,670.40/141,683.65 = 57,349.01/x
  3. Step 3: Cross multiply
    102,670.40x = 141,683.65 × 57,349.01
  4. Step 4: Simplify right side
    102,670.40x = 8,125,417,271.52
  5. Step 5: Solve for x
    x = 8,125,417,271.52/102,670.40
  6. Step 6: Final answer
    x = 79,140.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.