Home / 142,051.40-213,077.10-53,307.80

Finding the Fourth Proportional to 142,051.40, 213,077.10 and 53,307.80

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Solution

The fourth proportional to 142,051.40, 213,077.10 and 53,307.80 is: 79,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,051.40 : 213,077.10 = 53,307.80 : x
  2. Step 2: Convert to fraction form
    142,051.40/213,077.10 = 53,307.80/x
  3. Step 3: Cross multiply
    142,051.40x = 213,077.10 × 53,307.80
  4. Step 4: Simplify right side
    142,051.40x = 11,358,671,431.38
  5. Step 5: Solve for x
    x = 11,358,671,431.38/142,051.40
  6. Step 6: Final answer
    x = 79,961.70

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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.