Home / 105,242.04-145,275.57-64,972.08

Finding the Fourth Proportional to 105,242.04, 145,275.57 and 64,972.08

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Solution

The fourth proportional to 105,242.04, 145,275.57 and 64,972.08 is: 89,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,242.04 : 145,275.57 = 64,972.08 : x
  2. Step 2: Convert to fraction form
    105,242.04/145,275.57 = 64,972.08/x
  3. Step 3: Cross multiply
    105,242.04x = 145,275.57 × 64,972.08
  4. Step 4: Simplify right side
    105,242.04x = 9,438,855,956.09
  5. Step 5: Solve for x
    x = 9,438,855,956.09/105,242.04
  6. Step 6: Final answer
    x = 89,687.12

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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.