Home / 103,620.49-143,001.53-61,178.11

Finding the Fourth Proportional to 103,620.49, 143,001.53 and 61,178.11

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Solution

The fourth proportional to 103,620.49, 143,001.53 and 61,178.11 is: 84,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.49 : 143,001.53 = 61,178.11 : x
  2. Step 2: Convert to fraction form
    103,620.49/143,001.53 = 61,178.11/x
  3. Step 3: Cross multiply
    103,620.49x = 143,001.53 × 61,178.11
  4. Step 4: Simplify right side
    103,620.49x = 8,748,563,332.51
  5. Step 5: Solve for x
    x = 8,748,563,332.51/103,620.49
  6. Step 6: Final answer
    x = 84,428.89

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1.5x scale

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.