Home / 105,428.48-145,424.64-73,585.60

Finding the Fourth Proportional to 105,428.48, 145,424.64 and 73,585.60

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Solution

The fourth proportional to 105,428.48, 145,424.64 and 73,585.60 is: 101,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,428.48 : 145,424.64 = 73,585.60 : x
  2. Step 2: Convert to fraction form
    105,428.48/145,424.64 = 73,585.60/x
  3. Step 3: Cross multiply
    105,428.48x = 145,424.64 × 73,585.60
  4. Step 4: Simplify right side
    105,428.48x = 10,701,159,389.18
  5. Step 5: Solve for x
    x = 10,701,159,389.18/105,428.48
  6. Step 6: Final answer
    x = 101,501.60

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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.